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

- Used by Skyline modding framework

Fix ART Blit detection regression and add D24S8 <-> RGBA8 conv to Vulkan

This was regressed by ART.
Prior to ART, the screenshots were saved at the title's framebuffer resolution. A misunderstanding of the existing logic led to screenshot dimensions becoming dependent on the host render window size.

This changes the behavior to match how it was prior to ART at 1x, with screenshots now always being the title's framebuffer dimensions scaled by the resolution scaling factor.