wrappers: add CMake toolchain files #1212

Job	Run time
prepare	3s
msys2 (mingw64)	2h 3m 40s
macos	2h 24m 26s
msys2 (clang64)	1h 44m 46s
linux-asserts	0s
linux	2h 50m 55s
linux-test-cross-build-ffmpeg	0s
linux-cross-aarch64	3h 3m 10s
linux-cross-windows (i686, ucrt)	3h 5m 45s
linux-cross-windows (x86_64, ucrt)	3h 8m 11s
linux-cross-windows (armv7, ucrt)	2h 55m 53s
linux-cross-windows (aarch64, ucrt)	3h 2m 17s
test-ffmpeg	0s
test-libcxx	0s
test-toolchain (x86_64)	2m 4s
test-compiler-rt	0s
test-toolchain (i686)	4m 4s
test-openmp	0s
upload-nightly	0s
	1d 0h 25m 14s

Provide feedback