[DirectX][NFC] Model precise overload type specification of DXIL Ops (#83917)

Implement an abstraction to specify precise overload types supported by
DXIL ops. These overload types are typically a subset of LLVM
intrinsics.

Implement the corresponding changes in DXILEmitter backend.

Add tests to verify expected errors for unsupported overload types at
code generation time.

Add tests to check for correct overload error output.