build(clean): allow delete proto/swig generated files in project

two minor bugs in Makefile:
- `make clean` doesn't clean the swig genereated files
- `HYBRIDSE_CMAKE_DEPS_FLAGS := -DHYBRIDSE_TESTING_ENABLE=OFF -DEXAMPLES_ENABLE=OFF -DPYSDK_ENABLE=OFF -DJAVASDK_ENABLE=OFF`
these options are cached, simply overriding cannot change these values.

## Expected Behavior
- `make clean` at least provide an option to clean the generated files, including swig, proto and so on.
- By simply `make JAVASDK_ENABLE=ON`, we can make the hybridse javasdk

## Current Behavior
- `make clean` only delete the `build` and `hybridse/build`
- `make JAVASDK_ENABLE=ON` does not work as expected

Look at the project's Makefile, likely in the root directory. Identify the 'clean' target and the variables for HYBRIDSE_CMAKE_DEPS_FLAGS. For the clean target, add commands to remove proto and swig generated files (check typical locations like 'src/proto' or 'swig' directories). For the CMake flags, ensure they are not cached by using 'unset' or passing them as command-line arguments without caching. Test by running 'make clean' and 'make JAVASDK_ENABLE=ON' to verify the changes work.

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