✨ Add Sampler and Estimator Primitives to the QDMI-Qiskit Interface (backport #1507)

[mergify]

Description

This PR adds Sampler and Estimator primitives to the QDMI-Qiskit Interface.

Checklist:

• The pull request only contains commits that are focused and relevant to this change.
• I have added appropriate tests that cover the new/changed functionality.
• I have updated the documentation to reflect these changes.
• I have added entries to the changelog for any noteworthy additions, changes, fixes, or removals.
• I have added migration instructions to the upgrade guide (if needed).
• The changes follow the project's style guidelines and introduce no new warnings.
• The changes are fully tested and pass the CI checks.
• I have reviewed my own code changes.

(cherry picked from commit 13bf566)

[mergify]

Cherry-pick of 13bf566 has failed:

On branch mergify/bp/v3.x/pr-1507
Your branch is up to date with 'origin/v3.x'.

You are currently cherry-picking commit 13bf566d.
  (fix conflicts and run "git cherry-pick --continue")
  (use "git cherry-pick --skip" to skip this patch)
  (use "git cherry-pick --abort" to cancel the cherry-pick operation)

Changes to be committed:
	modified:   docs/qdmi/qdmi_backend.md
	modified:   python/mqt/core/plugins/qiskit/__init__.py
	modified:   python/mqt/core/plugins/qiskit/backend.py
	new file:   python/mqt/core/plugins/qiskit/estimator.py
	new file:   python/mqt/core/plugins/qiskit/sampler.py
	modified:   test/python/plugins/qiskit/conftest.py
	new file:   test/python/plugins/qiskit/test_estimator.py
	new file:   test/python/plugins/qiskit/test_sampler.py

Unmerged paths:
  (use "git add <file>..." to mark resolution)
	both modified:   CHANGELOG.md

To fix up this pull request, you can check it out locally. See documentation: https://docs.github.com/en/pull-requests/collaborating-with-pull-requests/reviewing-changes-in-pull-requests/checking-out-pull-requests-locally

[codecov]

Codecov Report

❌ Patch coverage is 96.47059% with 6 lines in your changes missing coverage. Please review.

Files with missing lines	Patch %	Lines
python/mqt/core/plugins/qiskit/estimator.py	96.6%	4 Missing ⚠️
python/mqt/core/plugins/qiskit/sampler.py	96.0%	2 Missing ⚠️

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