test: migrate federation tests (WPB-29238)

[emmaoke-w]

https://wearezeta.atlassian.net/browse/WPB-29238

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PR Submission Checklist for internal contributors

• The PR Title

  • conforms to the style of semantic commits messages¹ supported in Wire's Github Workflow²
  • contains a reference JIRA issue number like SQPIT-764
  • answers the question: If merged, this PR will: ... ³

• The PR Description

  • is free of optional paragraphs and you have filled the relevant parts to the best of your ability

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What's new in this PR?

• Migrate federation tests with MLS setup and cross-backend username search support.

Issues

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Testing

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PR Post Submission Checklist for internal contributors (Optional)

• Wire's Github Workflow has automatically linked the PR to a JIRA issue

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PR Post Merge Checklist for internal contributors

• If any soft of configuration variable was introduced by this PR, it has been added to the relevant documents and the CI jobs have been updated.

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References

1. https://sparkbox.com/foundry/semantic_commit_messages
2. https://github.com/wireapp/.github#usage
3. E.g. feat(conversation-list): Sort conversations by most emojis in the title #SQPIT-764.

[github-actions]

Test Results

  352 files  ±0    352 suites  ±0   1m 57s ⏱️ -1s
2 899 tests ±0  2 899 ✅ ±0  0 💤 ±0  0 ❌ ±0 
2 905 runs  ±0  2 905 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit 9cfdd41. ± Comparison against base commit 58271f0.

♻️ This comment has been updated with latest results.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 54.61%. Comparing base (58271f0) to head (9cfdd41).

Additional details and impacted files

@@           Coverage Diff            @@
##           develop    #5356   +/-   ##
========================================
  Coverage    54.61%   54.61%           
========================================
  Files          766      766           
  Lines        26852    26852           
  Branches      4460     4460           
========================================
  Hits         14665    14665           
  Misses       10777    10777           
  Partials      1410     1410           

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[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!

[github-actions]

APKs built during tests are available here. Scroll down to Artifacts!