Add `APX` ISA extension #1009

Job	Run time
MSBuild build (windows-2022)	1m 3s
CMake build + tests (macos-latest )	12s
Amalgamated build (Ubuntu 22.04)	6s
CMake build + tests (macos-latest -DZYAN_NO_LIBC=ON)	11s
fuzzing (address)	1m 25s
CMake build + tests (windows-2022 )	48s
fuzzing (undefined)	1m 23s
Meson build + tests (macos-latest, debug default)	23s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	44s
fuzzing (memory)	1m 28s
Meson build + tests (windows-2022, debug default)	1m 33s
CMake build + tests (ubuntu-22.04 )	7s
Meson build + tests (ubuntu-22.04, debug default)	39s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	6s
Meson build + tests (windows-2022, debug NO_LIBC)	50s
Meson build + tests (ubuntu-22.04, debug NO_LIBC)	11s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	22s
Meson build + tests (macos-latest, release default)	20s
CMake build + tests (windows-2022 -TClangCL)	1m 40s
Meson build + tests (windows-2022, release default)	1m 50s
Meson build + tests (ubuntu-22.04, release default)	21s
Meson build + tests (windows-2022, release NO_LIBC)	1m 29s
Meson build + tests (ubuntu-22.04, release NO_LIBC)	24s
Meson build + tests (ubuntu-22.04, minsize )	1m 17s
	18m 52s

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