Feat/allow re-exports in __init__.py files

[Evgenmater]

I have made things!

This PR relaxes the InitModuleHasLogicViolation to allow __init__.py files to consist solely of import statements.

---

Checklist

• I have double checked that there are no unrelated changes in this pull request (old patches, accidental config files, etc)
• I have created at least one test case for the changes I have made
• I have updated the documentation for the changes I have made
• I have added my changes to the CHANGELOG.md

Related issues

• Closes Allow re-exports in __init__.py for WPS412 #3486

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (5381e6c) to head (5fa87c7).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##            master     #3499   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          363       363           
  Lines        12029     12033    +4     
  Branches       819       820    +1     
=========================================
+ Hits         12029     12033    +4     

☔ 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.

[sobolevn]

Thanks!