[MLIR] Add postselect to assembly format for measure op

[erick-xanadu]

Context:

Description of the Change: add postselect to assembly format

Benefits: easier xDSL generation from table gen

Possible Drawbacks: None

Related GitHub Issues: Fixes #1690

[joeycarter]

I suppose if we add the postselect attribute to the assembly format here we should also add it to the new measure_in_basis op for MBQC:

catalyst/mlir/include/MBQC/IR/MBQCOps.td

Lines 89 to 91 in ab356a4

	let assemblyFormat = [{
	`[` $plane `,` $angle `]` $in_qubit attr-dict `:` type(results)
	}];

e.g.

`[` $plane `,` $angle `]` $in_qubit (`postselect` $postselect^)? attr-dict `:` type(results)

[paul0403]

Thanks!

[paul0403]

I suppose if we add the postselect attribute to the assembly format here we should also add it to the new measure_in_basis op for MBQC:

catalyst/mlir/include/MBQC/IR/MBQCOps.td

Lines 89 to 91 in ab356a4

	let assemblyFormat = [{
	`[` $plane `,` $angle `]` $in_qubit attr-dict `:` type(results)
	}];

e.g.

`[` $plane `,` $angle `]` $in_qubit (`postselect` $postselect^)? attr-dict `:` type(results)

44844b4