Add `APX` ISA extension #1004

Job	Run time
Amalgamated build (Ubuntu 22.04)	5s
CMake build + tests (macos-latest )	13s
MSBuild build (windows-2022)	37s
CMake build + tests (macos-latest -DZYAN_NO_LIBC=ON)	11s
fuzzing (address)	1m 22s
Meson build + tests (macos-latest, debug default)	20s
CMake build + tests (windows-2022 )	52s
fuzzing (undefined)	1m 20s
Meson build + tests (windows-2022, debug default)	2m 9s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	1m 10s
fuzzing (memory)	1m 28s
Meson build + tests (ubuntu-22.04, debug default)	18s
CMake build + tests (ubuntu-22.04 )	14s
Meson build + tests (windows-2022, debug NO_LIBC)	1m 13s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	7s
Meson build + tests (ubuntu-22.04, debug NO_LIBC)	12s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	17s
Meson build + tests (macos-latest, release default)	20s
CMake build + tests (windows-2022 -TClangCL)	44s
Meson build + tests (windows-2022, release default)	1m 41s
Meson build + tests (ubuntu-22.04, release default)	23s
Meson build + tests (windows-2022, release NO_LIBC)	1m 21s
Meson build + tests (ubuntu-22.04, release NO_LIBC)	14s
Meson build + tests (ubuntu-22.04, minsize )	19s
	17m 10s

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