[mono][jit] Adding more arm64 SIMD operations, SIMD codegen with instruction table...

[mono][jit] Adding more arm64 SIMD operations, SIMD codegen with instruction table. (#83094)

* [mono][jit] Handling vector operations on arm64, comparisions and a few others, tabular approach to instruciton specs.

* [mono][jit] Adding compare vector operations, not, neg. Mono IR to machine code transformation is now table-generated for select operations. Fixing issues.

* YAGNI on a macro.

* [mono][jit] Table-driven code SIMD generation on arm64 is now restricted to exclude certain operations that are easily implemented manually.

* [mono][jit] Code cleanup.

* Temporarily disable SIMD on arm64. Fix indentation. Comments.