Adding support for Vector512 `Equals`, `EqualsAny`, `op_Equality`, and `op_Inequality`. (#83470)
* Implement `Vector512.Equals` by way of special `AVX512` intrinsic.
* Add Vector512 `Equals`, `EqualsAll/op_Equality` `op_Inequality`.
* Fix `vpmovm2x` instructions for `MoveMaskToVectorSpecial`.
* Move `Vector512` Equals into `gtNewSimdCmpOpNode`.
* Adds `EqualsAny`.
* Fix `kortestq` and `kortestd` opcode gen (W bit).
* Fix merge and update instr flags.
* Addressing review comments.
* Removing unnecessary files.
* Addressing review comments.
* Fixing bug.
* Fixing k reg display on x86.
* Setting Resets_ZF to right value.
* Fixing extract.
---------
Co-authored-by: Deepak Rajendrakumaran <deepak.rajendrakumaran@intel.com>
Co-authored-by: Tanner Gooding <tagoo@outlook.com>