dmnt_cheat_vm: Implement opcode 0xC3 (ReadWriteStaticRegister)

This was based on Atmosphére's DMNT Cheat VM:

- https://github.com/Atmosphere-NX/Atmosphere/blob/master/stratosphere/dmnt/source/cheat/impl/dmnt_cheat_vm.hpp
- https://github.com/Atmosphere-NX/Atmosphere/blob/master/stratosphere/dmnt/source/cheat/impl/dmnt_cheat_vm.cpp

From Atmosphére's documentation: "Code type 0xC3 reads or writes a static register with a given register"

There are now only two remaining opcodes to implement (PauseProcess and BreakProcess)

This is untested because I don't have any experience in testing cheats on yuzu