[OMM] Add AllocateRayQuery2 DXIL Op, add validation

[bob80905]

This PR adds AllocateRayQuery2 as a new DXIL Op, which is intended to be the DXIL Op that any rayquery object initialized with the 2nd optional template argument will be lowered to. Additionally, according to the spec here: https://github.com/microsoft/hlsl-specs/blob/main/proposals/0024-opacity-micromaps.md
there are new validation rules that should be run against the allocateRayQuery* DXIL Ops. This PR implements these validation rules, and tests them.

Fixes #7113

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[simoll]

I'll pull the new dxil opcode AllocateRayQuery2 into the opcode block reserved by:#7125

The opcode 258 is currently claimed by both PRs. This will allow us to merge more easily.

[damyanp]

LGTM - some questions, maybe something you want to change as well.

You really should get a review from someone familiar with the DXC codebase.

[tex3d]

See comments for details:

• new op should not be in DXIL 1.8
• wrong location for DXIL op call checking code
• Some minor suggestions on validation rule naming

[tex3d]

Looks good!