build : detect AVX512 in Makefile, add AVX512 option in CMake (#2043)

build : detect AVX512 in Makefile, add AVX512 option in CMake (#2043)

* make : add AVX512 detection to Makefile and CMakeLists.txt

* make : autodetect more AVX512 instruction subsets

* cmake : do not default to AVX512, must be enabled explicitly

* cmake : enable a set of AVX512 subsets, when AVX512 is turned on

* make : consolidate AVX512 subsets, add AVX512 VBMI

* cmake : revert to NO AVX512 setting, add settings for AVX512 VNNI and VBMI

* make : re-introduce AVX512VNNI back

* cmake : remove superfluous comment line