Set operations and tests added

[austingmhuang]

Context:
Set operations are useful for Wires and Registers and would be a welcome addition/feature in the PennyLane ecosystem

Description of the Change:
This PR implements the 4 set operations for Wires and you can access them with their respective operators (| & - ^) as well as comprehensive tests.

Benefits:
Nice syntactic sugar

Possible Drawbacks:

Related GitHub Issues:
[sc-67925]

[github-actions]

Hello. You may have forgotten to update the changelog!
Please edit doc/releases/changelog-dev.md 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 99.65%. Comparing base (b7675ca) to head (d21786c).
Report is 302 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5983      +/-   ##
==========================================
- Coverage   99.66%   99.65%   -0.01%     
==========================================
  Files         428      430       +2     
  Lines       41182    41193      +11     
==========================================
+ Hits        41042    41052      +10     
- Misses        140      141       +1     

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[isaacdevlugt]

Thanks @austingmhuang! would it also be possible to have union, difference, intersection and symmetric_difference methods? E.g.,

    def union(self, other):
        new_wires = set(self.labels) | set(other.labels)
        return Wires(list(new_wires))

    def __or__(self, other):
        return self.union(other)

I know it's a bit more to add and have tests for, but this would be nice.

Other than that, looks great!

[trbromley]

Thanks @austingmhuang! would it also be possible to have union, difference, intersection and symmetric_difference methods? E.g.,

    def union(self, other):
        new_wires = set(self.labels) | set(other.labels)
        return Wires(list(new_wires))

    def __or__(self, other):
        return self.union(other)

I know it's a bit more to add and have tests for, but this would be nice.

Other than that, looks great!

Yes, we're looking to add as many as possible of the typical Python set operations - though happy to discuss any that are particularly challenging.

[austingmhuang]

Yes, we're looking to add as many as possible of the typical Python set operations - though happy to discuss any that are particularly challenging.

No worries I can add all the set operations, no challenge there :)

[isaacdevlugt]

Thanks @austingmhuang! 🤗 Feel free to tag me for review again when the time comes 👍

[isaacdevlugt]

Thanks Austin! My suggestions are minor. Just want to make the docstring code examples copy-pastable.

[soranjh]

Thanks @austingmhuang, looks good to me. Left some minor comments.