Move get_relevant_address functionality to MediaPlugin base class

[johannaengland]

Scope and purpose

Similar to #2015. Copied from #936.

Contributor Checklist

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• Added a changelog fragment for towncrier
• Added/amended tests for new/changed code
• Added/changed documentation, including updates to the user manual if feature flow or UI is considerably changed
• Linted/formatted the code with ruff and djLint, easiest by using pre-commit
• The first line of the commit message continues the sentence "If applied, this commit will ...", starts with a capital letter, does not end with punctuation and is 50 characters or less long. See our how-to
• If applicable: Created new issues if this PR does not fix the issue completely/there is further work to be done
• If this results in changes in the UI: Added screenshots of the before and after
• If this results in changes to the database model: Updated the ER diagram

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.01%. Comparing base (d58269a) to head (6ec77a6).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2020      +/-   ##
==========================================
- Coverage   89.02%   89.01%   -0.02%     
==========================================
  Files         155      155              
  Lines        7329     7321       -8     
==========================================
- Hits         6525     6517       -8     
  Misses        804      804              

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[github-actions]

Test results

    8 files  1 792 suites   3m 36s ⏱️
1 005 tests 1 004 ✅ 1 💤 0 ❌
8 040 runs  8 032 ✅ 8 💤 0 ❌

Results for commit 6ec77a6.

♻️ This comment has been updated with latest results.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud