[netcore][llvm] Implement Sse1-4.2 subsets used by corlib (mono/mono#18103)

[netcore][llvm] Implement Sse1-4.2 subsets used by corlib (mono/mono#18103)

* Implement SSE41 subset used by corlib

* Implement Sse2.MoveMask

* only works with llvm

* Implement Sse3 and Ssse3 subsets used by corlib

* Implement a few SSE1 methods

* Address feedback, also, implement Sse.Add/Subtract

* Fix build

* Implement Sse.Multiply, Sse.Store

* Implement Sse.CompareNotEquals

* Implement Sse.MoveScalar

* Finish SSE1 corlib subset

* Implement Sse.LoadVector128, Sse.Shuffle

* Sse.Shuffle cleanup

* Implement Sse2 APIs

* More of SSE2: LoadAlignedVector128, Compare*

* Implement Sse2.Unpack* and Sse2.StoreScalar

* Implement Sse2.PackUnsignedSaturate

* Implement Sse2.ShiftRightLogical

* Implement Sse2.Shuffle

* Implement Vector128<T>.Zero

* Fix CreateScalarUnsafe

* Implement Vector128.As*, Fix Vector128.CreateScalarUnsafe

* Fix failures

* Fix failures

* Fix Sse.MoveMask

* remove redundant null checks

* Fix AOT failures

* fix compilation warrning

* rename create_vector_mask_*

* Fix failures found via tests

* Index in Sse41.Insert has to be a constant

* add local tests for mono

* Update tests (cleanup)

* Code cleanup

* test

* fix typo

* Clean up

* Clean up

* Implement And, AndNot, Or, Xor, Divide for Sse1

* Cleanup

* Fix build

* limit emit_vector128 with LLVM

* enable IsSupported for corlib

* Fix build on wasm (if-defs issue)

* Don't intrinsify Vector256

* Address feedback

Commit migrated from https://github.com/mono/mono/commit/423192ed85c0b2263b46f3f4cfa63ec7b90b3f31