Add spacetime test command

Add the "test" command to the spacetime cli.

This will perform a similar functionality to "cargo test" but actually work.

Right now "cargo test" throws the following error: fatal error LNK1120: 14 unresolved externals

$ cargo test
   Compiling spacetime-module v0.1.0 (F:\GitHub\godot_projects\void-online\rust-server)
error: linking with `link.exe` failed: exit code: 1120
  |
  = note: "C:\\Program Files (x86)\\Microsoft Visual Studio\\2022\\BuildTools\\VC\\Tools\\MSVC\\14.35.32215\\bin\\HostX64\\x64\\link.exe" "/NOLOGO" "C:\\Users\\krazy\\AppData\\Local\\Temp\\rustc7Fd6v1\\symbols.o" "<97 object files omitted>" "<sysroot>\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib/{libtest-*,libgetopts-*,libunicode_width-*,librustc_std_workspace_std-*}.rlib" "F:\\GitHub\\godot_projects\\void-online\\rust-server\\target\\debug\\deps/{libglam-3538ff5b82038ad1.rlib,libspacetimedb-49c1e83d2e8ee148.rlib,libspacetimedb_bindings_sys-cf59fd0a43b82965.rlib,librand-c46f6070f62b8020.rlib,librand_chacha-89e611242b96e3aa.rlib,libppv_lite86-0dff4c0751d26dcf.rlib,librand_core-42f34039d6fc91c5.rlib,libgetrandom-cb57b37f129936ef.rlib,liblog-17408f5d9644b296.rlib,libspacetimedb_lib-c0e8d1c842a87799.rlib,libblake3-cf32899386ee5c93.rlib,libconstant_time_eq-e39a0c3eb4af0819.rlib,libarrayref-77a3d0679392128e.rlib,libspacetimedb_data_structures-d14000a3f717d0c8.rlib,libahash-a52103bd8ef066fc.rlib,libonce_cell-42eb3a05926beb91.rlib,libcfg_if-885ced7a34e6dac7.rlib,libzerocopy-d472eddbe14685b6.rlib,libhashbrown-b7597ad76ab97931.rlib,libfoldhash-79743f2d134e806d.rlib,libequivalent-c413381703bf56a9.rlib,liballocator_api2-6f68ad76f7512859.rlib,libspacetimedb_sats-21cb458089590d3f.rlib,libhex-79f4f762133271c1.rlib,libarrayvec-8f54636ecafebae2.rlib,libbytes-d18dcb52e317328a.rlib,libdecorum-0c05f9356f88bd5a.rlib,libapprox-acc31f69f12364e5.rlib,libthiserror-d6147bfb1eee2c27.rlib,libchrono-500d154af15e3a63.rlib,libnum_traits-3d5e2650982b2ed6.rlib,libsha3-415435dcd8915fbb.rlib,libkeccak-abf8aac9581643b0.rlib,libdigest-6f293216641a3612.rlib,libblock_buffer-01141a6f923fae44.rlib,libcrypto_common-72995388cfb40927.rlib,libgeneric_array-cc837247b98c854c.rlib,libtypenum-31997a7b4497383a.rlib,libspacetimedb_primitives-8a5339f31a42608c.rlib,libnohash_hasher-6ac15dbbaffe32da.rlib,libbitflags-c32e2495da88f8bb.rlib,libitertools-726772eb4200847d.rlib,libeither-730681c13ca9a2fd.rlib,libsmallvec-89fd974fa262f55f.rlib,libbytemuck-da3f7e8091f431ec.rlib,libethnum-2d17927af1190e14.rlib,libserde-58654e8959d18b75.rlib,libsecond_stack-282b09b5bfbe9e82.rlib,libanyhow-7d7dd0ce4993f3cf.rlib}.rlib" "<sysroot>\\lib\\rustlib\\x86_64-pc-windows-msvc\\lib/{libstd-*,libpanic_unwind-*,libwindows_targets-*,librustc_demangle-*,libstd_detect-*,libhashbrown-*,librustc_std_workspace_alloc-*,libunwind-*,libcfg_if-*,liballoc-*,librustc_std_workspace_core-*,libcore-*,libcompiler_builtins-*}.rlib" "kernel32.lib" "bcrypt.lib" "advapi32.lib" "kernel32.lib" "kernel32.lib" "advapi32.lib" "ntdll.lib" "userenv.lib" "ws2_32.lib" "dbghelp.lib" "/defaultlib:msvcrt" "/NXCOMPAT" "/LIBPATH:C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.40.33807\\atlmfc\\lib\\x64" "/LIBPATH:F:\\GitHub\\godot_projects\\void-online\\rust-server\\target\\debug\\build\\blake3-c7dfffefa57a2ed2\\out" "/LIBPATH:C:\\Program Files\\Microsoft Visual Studio\\2022\\Community\\VC\\Tools\\MSVC\\14.40.33807\\atlmfc\\lib\\x64" "/LIBPATH:F:\\GitHub\\godot_projects\\void-online\\rust-server\\target\\debug\\build\\blake3-c7dfffefa57a2ed2\\out" "/OUT:F:\\GitHub\\godot_projects\\void-online\\rust-server\\target\\debug\\deps\\spacetime_module-7c4833ec4b075e44.exe" "/OPT:REF,NOICF" "/DEBUG" "/PDBALTPATH:%_PDB%" "/NATVIS:<sysroot>\\lib\\rustlib\\etc\\intrinsic.natvis" "/NATVIS:<sysroot>\\lib\\rustlib\\etc\\liballoc.natvis" "/NATVIS:<sysroot>\\lib\\rustlib\\etc\\libcore.natvis" "/NATVIS:<sysroot>\\lib\\rustlib\\etc\\libstd.natvis"
  = note: some arguments are omitted. use `--verbose` to show all linker arguments
  = note: spacetime_module-7c4833ec4b075e44.1f3kv3sn2hxxp31uqg0tee55f.rcgu.o : error LNK2019: unresolved external symbol datastore_insert_bsatn referenced in function _ZN24spacetimedb_bindings_sys22datastore_insert_bsatn17hc6c097cf9217ef8dE␍
          spacetime_module-7c4833ec4b075e44.2mxlqeqbkn895rlasqq7ji2m9.rcgu.o : error LNK2019: unresolved external symbol index_id_from_name referenced in function _ZN24spacetimedb_bindings_sys18index_id_from_name28_$u7b$$u7b$closure$u7d$$u7d$17hf5ff08f9fd8a613cE␍  
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol console_timer_start referenced in function _ZN11spacetimedb13log_stopwatch12LogStopwatch3new17ha5296c7fce11f29fE␍
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol console_timer_end referenced in function _ZN82_$LT$spacetimedb..log_stopwatch..LogStopwatch$u20$as$u20$core..ops..drop..Drop$GT$4drop17h25526596c6a7a83cE␍
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol bytes_source_read referenced in function _ZN11spacetimedb2rt22read_bytes_source_into17h1b61209919aebdc5E␍
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol bytes_sink_write referenced in function _ZN11spacetimedb2rt13write_to_sink17hb0bcd6159fca7a17E␍       
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.3.rcgu.o) : error LNK2019: unresolved external symbol console_log referenced in function _ZN24spacetimedb_bindings_sys11console_log17h908a1959b6283040E␍    
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.3.rcgu.o) : error LNK2019: unresolved external symbol table_id_from_name referenced in function _ZN24spacetimedb_bindings_sys18table_id_from_name28_$u7b$$u7b$closure$u7d$$u7d$17h902f1dfb0b3a0458E␍
          libspacetimedb-49c1e83d2e8ee148.rlib(spacetimedb-49c1e83d2e8ee148.spacetimedb.af6d99a19a87bfa1-cgu.3.rcgu.o) : error LNK2019: unresolved external symbol identity referenced in function _ZN24spacetimedb_bindings_sys8identity17h20e3bdfe9c5614e2E␍
          libspacetimedb_bindings_sys-cf59fd0a43b82965.rlib(spacetimedb_bindings_sys-cf59fd0a43b82965.spacetimedb_bindings_sys.cf4bb3cde0c4bc14-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol datastore_table_scan_bsatn referenced in function _ZN24spacetimedb_bindings_sys26datastore_table_scan_bsatn28_$u7b$$u7b$closure$u7d$$u7d$17h4be95b5a6b832cf7E␍
          libspacetimedb_bindings_sys-cf59fd0a43b82965.rlib(spacetimedb_bindings_sys-cf59fd0a43b82965.spacetimedb_bindings_sys.cf4bb3cde0c4bc14-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol datastore_index_scan_range_bsatn referenced in function _ZN24spacetimedb_bindings_sys32datastore_index_scan_range_bsatn28_$u7b$$u7b$closure$u7d$$u7d$17h1d9e411c3bb9ee86E␍
          libspacetimedb_bindings_sys-cf59fd0a43b82965.rlib(spacetimedb_bindings_sys-cf59fd0a43b82965.spacetimedb_bindings_sys.cf4bb3cde0c4bc14-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol datastore_delete_by_index_scan_range_bsatn referenced in function _ZN24spacetimedb_bindings_sys42datastore_delete_by_index_scan_range_bsatn28_$u7b$$u7b$closure$u7d$$u7d$17h964a4b172a787a08E␍
          libspacetimedb_bindings_sys-cf59fd0a43b82965.rlib(spacetimedb_bindings_sys-cf59fd0a43b82965.spacetimedb_bindings_sys.cf4bb3cde0c4bc14-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol row_iter_bsatn_advance referenced in function _ZN24spacetimedb_bindings_sys7RowIter4read17hbed088c544d4360cE␍
          libspacetimedb_bindings_sys-cf59fd0a43b82965.rlib(spacetimedb_bindings_sys-cf59fd0a43b82965.spacetimedb_bindings_sys.cf4bb3cde0c4bc14-cgu.0.rcgu.o) : error LNK2019: unresolved external symbol row_iter_bsatn_close referenced in function _ZN75_$LT$spacetimedb_bindings_sys..RowIter$u20$as$u20$core..ops..drop..Drop$GT$4drop17h124c0641af331586E␍
          F:\GitHub\godot_projects\void-online\rust-server\target\debug\deps\spacetime_module-7c4833ec4b075e44.exe : fatal error LNK1120: 14 unresolved externals␍


error: could not compile `spacetime-module` (lib test) due to 1 previous error

Start by locating the Spacetime CLI command entry points and reviewing how existing commands invoke module operations. Reproduce the reported cargo test failure for spacetime-module, then define the test command's expected behavior and verify it can run module tests without the unresolved linker errors.