Move reference semantics MBQC ops to MBQC dialect

[paul0403]

Context:
When the MBQC reference semantics ops were first added, I added them to the overarching qref dialect.

This was not the best organization. See discussion in thread

In particular,

We don't have a single dialect for all the existing dialects either just because they share "value semantics". While MLIR has two distinct dialects for tensors (value-sem) and memrefs (memory-sem), the difference is that these dialects specifically focus on those (i.e. what can you do with tensors or memrefs). Domain specific dialects seem either work with both (e.g. linalg can operate on both tensors and memrefs) or chose to explicitly work with only one of those (e.g. stablehlo).

As a domain specific dialect, MBQC is now hosting both value and reference semantics ops.

Description of the Change:
Move reference semantics mbqc ops from qref dialect to mbqc dialect.

Benefits:
Better organization.

[sc-117892]

[github-actions]

Hello. You may have forgotten to update the changelog!
Please edit doc/releases/changelog-dev.md on your branch with:

• A one-to-two sentence description of the change. You may include a small working example for new features.
• A link back to this PR.
• Your name (or GitHub username) in the contributors section.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 96.94%. Comparing base (4574589) to head (1b08148).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2829   +/-   ##
=======================================
  Coverage   96.94%   96.94%           
=======================================
  Files         169      169           
  Lines       18972    18972           
  Branches     1807     1807           
=======================================
  Hits        18392    18392           
  Misses        411      411           
  Partials      169      169           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[joeycarter]

Thanks @paul0403 💯

Just had a couple of suggestions to polish up the docs while we're here, otherwise looks good.

[mehrdad2m]

Thanks! Don't forget to add changelog!