* 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
* core: Split error codes into separate files
* Reduces build times and is cleaner
* core: Bring structs and enums to codebase style
* core: More style changes
