Add `APX` ISA extension #1019

Job	Run time
Amalgamated build (Ubuntu 22.04)	7s
fuzzing (address)	1m 25s
Meson build + tests (macos-latest, debug default)	20s
fuzzing (undefined)	1m 28s
CMake build + tests (macos-latest )	12s
Meson build + tests (windows-2022, debug default)	2m 22s
fuzzing (memory)	1m 28s
MSBuild build (windows-2022)	1m 37s
CMake build + tests (macos-latest -DZYAN_NO_LIBC=ON)	13s
Meson build + tests (ubuntu-22.04, debug default)	21s
CMake build + tests (windows-2022 )	1m 4s
Meson build + tests (windows-2022, debug NO_LIBC)	1m 34s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	44s
Meson build + tests (ubuntu-22.04, debug NO_LIBC)	22s
CMake build + tests (ubuntu-22.04 )	9s
Meson build + tests (macos-latest, release default)	32s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	5s
Meson build + tests (windows-2022, release default)	2m 3s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	10s
Meson build + tests (ubuntu-22.04, release default)	32s
CMake build + tests (windows-2022 -TClangCL)	1m 31s
Meson build + tests (windows-2022, release NO_LIBC)	1m 48s
Meson build + tests (ubuntu-22.04, release NO_LIBC)	22s
Meson build + tests (ubuntu-22.04, minsize )	29s
	20m 58s

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