Add support for AVX512 VNNI instructions

Add a pointer to any prior users list discussion. https://groups.google.com/g/dynamorio-users/c/_rgb7_8AIZw

Is your feature request related to a problem? Please describe. Unable to run programs that use VNNI instructions.

Describe the solution you'd like Enable programs that use VNNI instructions

Do you have any implementation in mind for this feature? Add support in the decoder

Describe alternatives you've considered None

Additional context None