Impl sceSystemServiceLoadExec (#3647)

* Add support for restarting the emulator with new configurations

- Implement `Restart` function in `Emulator` to enable process relaunch with updated parameters.
- Modify `sceSystemServiceLoadExec` to use the restart functionality.

* Add logging for emulator restart and system service load execution

* Add IPC emulator PID output command

Impl `PID` output command to return the emulator process ID
- required for launches supporting emulator restart

* Add log file append mode support (used after restarting to keep the same log file)

* Keep game root between restarts

* add --wait-for-debugger option flag

* add --wait-for-pid flag

used for sync between parent & child process during restart

* impl restart via ipc

* fix override game root

* add qt flags to allow restart

CMakeLists.txt

@@ -824,6 +824,8 @@ set(CORE src/core/aerolib/stubs.cpp
          ${DEV_TOOLS}
          src/core/debug_state.cpp
          src/core/debug_state.h
+         src/core/debugger.cpp
+         src/core/debugger.h
          src/core/linker.cpp
          src/core/linker.h
          src/core/memory.cpp