Fix: Move classes

[localheinz]

This pull request

• moves a few internal classes into a different namespace

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.95%. Comparing base (14f0daa) to head (ad5e6f3).

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #1371   +/-   ##
=========================================
  Coverage     98.95%   98.95%           
  Complexity      106      106           
=========================================
  Files            25       25           
  Lines           383      383           
=========================================
  Hits            379      379           
  Misses            4        4           

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