Add `APX` ISA extension #1015

Job	Run time
Amalgamated build (Ubuntu 22.04)	4s
fuzzing (address)	1m 23s
CMake build + tests (macos-latest )	16s
fuzzing (undefined)	1m 17s
Meson build + tests (macos-latest, debug default)	21s
CMake build + tests (macos-latest -DZYAN_NO_LIBC=ON)	11s
fuzzing (memory)	1m 25s
MSBuild build (windows-2022)	1m 20s
Meson build + tests (windows-2022, debug default)	1m 32s
CMake build + tests (windows-2022 )	40s
Meson build + tests (ubuntu-22.04, debug default)	19s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	1m 16s
CMake build + tests (ubuntu-22.04 )	7s
Meson build + tests (windows-2022, debug NO_LIBC)	1m 34s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	8s
Meson build + tests (ubuntu-22.04, debug NO_LIBC)	11s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	5s
Meson build + tests (macos-latest, release default)	20s
CMake build + tests (windows-2022 -TClangCL)	1m 38s
Meson build + tests (windows-2022, release default)	1m 28s
Meson build + tests (ubuntu-22.04, release default)	20s
Meson build + tests (windows-2022, release NO_LIBC)	1m 6s
Meson build + tests (ubuntu-22.04, release NO_LIBC)	10s
Meson build + tests (ubuntu-22.04, minsize )	25s
	17m 36s

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