Allow skipping adding FSR2 shaders to Android APK. #597

Job	Run time
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=SDL	19m 24s
Build windows-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	15m 37s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=SDL	19m 27s
Build windows-latest \|\| SHARED=ON \|\| PLATFORM=libretro	15m 28s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=SDL	19m 14s
Build ubuntu-latest \|\| SHARED=OFF \|\| PLATFORM=libretro	17m 57s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=SDL	17m 56s
Build ubuntu-latest \|\| SHARED=ON \|\| PLATFORM=libretro	17m 7s
	2h 22m 10s

Provide feedback