Add `APX` ISA extension #893

Job	Run time
Amalgamated build (Ubuntu 22.04)	8s
MSBuild build (windows-2022)	1m 45s
fuzzing (address)	1m 3s
CMake build + tests (macOS-latest )	17s
fuzzing (undefined)	57s
CMake build + tests (macOS-latest -DZYAN_NO_LIBC=ON)	16s
fuzzing (memory)	58s
CMake build + tests (windows-2022 )	43s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	1m 6s
CMake build + tests (ubuntu-22.04 )	13s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	14s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	9s
CMake build + tests (windows-2022 -TClangCL)	2m 20s
	10m 9s

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