MacOS debugger not working on Apple Sillicon

``TLDR; While it is possible to run an x86_64 version of Hashlink through Apple's Rosetta 2 (on MacOS 12.0) emulation layer, debugging currently is broken.``

The debugger fails at properly attaching to the debugee's process using `ptrace(PT_ATTACHEXC)`. No error is returned, but the `hl` process being debugged enters an odd state and no mach-exception is received on the tracing process. On Intel Mac (also with older MacOS version) this still works as expected.

Any hints are welcome.