Extract new module street

[leonardehrenfried]

Summary

This is the second attempt at this. This time round I have split up the work into several commits:

• A few small fixes before moving classes
• Copying test fixtures, because the existing ones are now not on the class path anymore
• Moving all classes
• Fixing the imports
• Updating the architecture tests

Issue

Ref #6881

Unit tests

Lots updated.

Bumping the serialization version id

Very much yes.

[codecov]

Codecov Report

❌ Patch coverage is 88.88889% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 70.04%. Comparing base (1887ed4) to head (8888140).

Files with missing lines	Patch %	Lines
...ne/config/configure/DeduplicatorServiceModule.java	0.00%	2 Missing ⚠️

Additional details and impacted files

@@              Coverage Diff              @@
##             dev-2.x    #7144      +/-   ##
=============================================
- Coverage      72.15%   70.04%   -2.11%     
+ Complexity     20881    20046     -835     
=============================================
  Files           2273     2273              
  Lines          84470    84469       -1     
  Branches        8424     8424              
=============================================
- Hits           60952    59170    -1782     
- Misses         20544    22333    +1789     
+ Partials        2974     2966       -8     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[leonardehrenfried]

Unfortunately this accumulated merge conflicts quickly so I had to merge again. @t2gran let me know if it's still recognisable.