Add `APX` ISA extension #892

Job	Run time
MSBuild build (windows-2022)	1m 26s
Amalgamated build (Ubuntu 22.04)	6s
fuzzing (address)	1m 16s
CMake build + tests (macOS-latest )	32s
fuzzing (undefined)	1m 8s
CMake build + tests (macOS-latest -DZYAN_NO_LIBC=ON)	15s
fuzzing (memory)	1m 11s
CMake build + tests (windows-2022 )	1m 38s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	1m 5s
CMake build + tests (ubuntu-22.04 )	15s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	15s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	10s
CMake build + tests (windows-2022 -TClangCL)	2m 4s
	11m 21s

Provide feedback