[Feature] DaedalusVm: Expose Pc (program counter) and UnsafeJump for Ikarus loop control

[JaXt0r]

Ikarus implements its own loop constructs (repeat, while, mem_goto) by redirecting the VM's program counter at runtime. To support these in the C# wrapper, two APIs are needed.

Reference OpenGothic (directmemory.cpp):

vm.override_function("repeat", [this](zenkit::DaedalusVm& vm) {
  // ...
  vm.unsafe_jump(jmp - rp.size); // redirect execution to loop start or exit
});

vm.override_function("while", [this](zenkit::DaedalusVm& vm) {
  const int cond = vm.pop_int();
  if (cond == 0)
	  vm.unsafe_jump(loopBacktrack[vm.pc()] - rp.size);
});

Requested C# API:

• DaedalusVm.Pc()
• DaedalusVm.UnsafeJump()