Refactor menu states and shortcuts in GMainWindow.

- Removed "Start", since it was always disabled unless it was "Continue"
which has now been moved to "Pause".
- Allow hotkeys to be used while in fullscreen.
- Removed the load amiibo hotkey.

configure_general: Allow framerate cap to be used in custom game configs

kernel: svc: Implement SetProcessMemoryPermission 

Added TAS controls to the menu under Tools

Add InstructionCacheOperationRaised handler for 'ic ivau' instruction

general: Resolve comments in PR #7368

Fix screenshot dimensions when at 1x scale

Fix crash on exit due to static scoped dummy threads

service: pm: Implement AtmosphereGetProcessId 

- Used by Skyline modding framework