Add `APX` ISA extension #988

Job	Run time
Amalgamated build (Ubuntu 22.04)	8s
fuzzing (address)	1m 29s
fuzzing (undefined)	1m 25s
CMake build + tests (macos-latest )	12s
Meson build + tests (macos-latest, debug default)	21s
fuzzing (memory)	1m 24s
CMake build + tests (macos-latest -DZYAN_NO_LIBC=ON)	12s
Meson build + tests (windows-2022, debug default)	1m 57s
MSBuild build (windows-2022)	40s
CMake build + tests (windows-2022 )	1m 33s
Meson build + tests (ubuntu-22.04, debug default)	20s
CMake build + tests (windows-2022 -DZYAN_NO_LIBC=ON)	31s
Meson build + tests (windows-2022, debug NO_LIBC)	1m 29s
Meson build + tests (ubuntu-22.04, debug NO_LIBC)	9s
CMake build + tests (ubuntu-22.04 )	6s
Meson build + tests (macos-latest, release default)	20s
CMake build + tests (ubuntu-22.04 -DZYAN_NO_LIBC=ON)	7s
Meson build + tests (windows-2022, release default)	1m 57s
CMake build + tests (ubuntu-22.04 -DZYDIS_MINIMAL_MODE=ON -DZYDIS_FEATURE_ENCODER=OFF)	7s
Meson build + tests (ubuntu-22.04, release default)	23s
CMake build + tests (windows-2022 -TClangCL)	1m 21s
Meson build + tests (windows-2022, release NO_LIBC)	50s
Meson build + tests (ubuntu-22.04, release NO_LIBC)	12s
Meson build + tests (ubuntu-22.04, minsize )	22s
	17m 35s

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