[Validator] Check content of PSV0 part in validation

[python3kgae]

Replace the memcpy check for PSV0 part.
Build DxilPipelineStateValidation object from data in PSV0 part. Then compare the content with information from input DxilModule.

With this change, the order of signature elements and resources could be different between the container and the DxilModule.
And the StringTable could be in different order as well.

Second step for #6817

[llvm-beanz]

I feel like there is a lot of missing test coverage here. I don't see tests for the various errors. I also think the error messages don't seem to be particularly descriptive, so I'm not even sure how a compiler implementer would interpret the errors and know what was wrong.

[github-actions]

✅ With the latest revision this PR passed the C/C++ code formatter.

[tex3d]

This does two major things I don't think we should do:

• relaxes ordering requirement for signature elements relative to DxilModule (absolutely should not do this)
• relaxes ordering requirement for resources relative to DxilModule (I don't see any need or advantage to this)

I have other more minor comments, and I haven't completed reviewing some parts and the tests at this point.

[python3kgae]

This does two major things I don't think we should do:

• relaxes ordering requirement for signature elements relative to DxilModule (absolutely should not do this)
• relaxes ordering requirement for resources relative to DxilModule (I don't see any need or advantage to this)

I have other more minor comments, and I haven't completed reviewing some parts and the tests at this point.

Updated.

[pow2clk]

I appreciate the new code consolidation. I was glad to see how well LoadViewIDStateFromPSV subbed in for the SimpleViewID class. I still think the error messages are unwieldy, but I'm willing to defer to you there.

[tex3d]

One potential missing validation:
Where does it make sure the PSV part size is the expected size for the data for that PSV version based on the validator version? Otherwise it could contain extra data tacked on to the end which would get ignored by the validator.

[python3kgae]

One potential missing validation: Where does it make sure the PSV part size is the expected size for the data for that PSV version based on the validator version? Otherwise it could contain extra data tacked on to the end which would get ignored by the validator.

Created #6924 to check PSV part size.