Move most gScenario* globals to GameState_t #2012

Job	Run time
Check changelog formatting	7s
Lint Commit Message	0s
Check code formatting	47s
Linux (Debug, [http, network, flac, vorbis OpenGL] disabled) using clang	9m 10s
Android	7m 29s
Linux (Debug) using clang, coverage enabled	9m 12s
Linux (x86_64, AppImage)	5m 55s
Linux (docker)	0s
Linux (x86_64, bionic, portable)	6m 3s
macOS (x64) using CMake	11m 0s
Linux (x86_64, focal, portable)	5m 47s
Windows (win32)	8m 23s
macOS (arm64) using CMake	5m 21s
Windows (win32) using mingw	5m 29s
Linux (x86_64, jammy, portable)	6m 37s
Windows (x64)	8m 17s
Windows (arm64)	7m 24s
Linux (x86_64, bullseye, portable)	6m 22s
Linux (i686, focal, portable)	5m 36s
macOS universal app bundle	1m 24s
	1h 50m 23s

Provide feedback