Adding qml.Superposition

[KetpuntoG]

Context:

This PR implements qml.Superposition, a new operator that prepares states given as superposition of basic states

[sc-72648]

Benefits:

Allow user to prepare states in a new format
In addition, the decomposition is efficient for this type of states

Possible Drawbacks:

[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 ✅

Please upload report for BASE (master@ff3c1f9). Learn more about missing BASE report.
Report is 281 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #6670   +/-   ##
=========================================
  Coverage          ?   99.62%           
=========================================
  Files             ?      475           
  Lines             ?    44715           
  Branches          ?        0           
=========================================
  Hits              ?    44546           
  Misses            ?      169           
  Partials          ?        0           

☔ 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.

[willjmax]

Looks good. Just some minor comments.

[soranjh]

Thanks @KetpuntoG, left some comments but looks good overall.

[soranjh]

Thanks @KetpuntoG, left my final set of comments, will approve when they are addressed.

[KetpuntoG]

Thanks @KetpuntoG, left my final set of comments, will approve when they are addressed.

Thanks for the review @soranjh , I worked on the changes and added the checks. Note that the normalization check, verify that we are not with an abstract input, otherwise it doesn't work with jit (same as other templates)

[soranjh]

Looks good, thanks @KetpuntoG.