MLIR importer and exporter

[scarrazza]

Investigate libraries that implement this feature. Provide a first to_mlir and from_mlir implementation for circuits. Consider cudaq and catalyst dialalects.

[scarrazza]

Similarly to #1726 (comment), for cudaq there is a openqasm3_to_cudaq conversion function.

[scarrazza]

Just a clarification, in principle we could consider generating the MLIR high-level language (cudaq, etc..) and/or its lower level representation (i.e. quake dialect).