Restore and fix macOS KDP protocol support

[XVilka]

Back in Radare2 times there was unmaintained KDP plugin. Idea is to restore it, test, and fix to support modern macOSes for Intel and ARM. Moreover, just as GDB and WinKD support, it belongs in the Rizin main repository, not in extras

See:

• https://github.com/rizinorg/rizin-extras/tree/master/unmaintained/kdp. (please note, some of the code was copied from GDB, thus it's GPL, it's better to rewrite that part in the new license - LGPLv3, as with the most of the Rizin code)
• https://blog.quarkslab.com/an-overview-of-macos-kernel-debugging.html