Add Aqua, fix Project.toml and exports

[ufechner7]

Enable automatic quality assurance

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.20%. Comparing base (a5f962d) to head (bf1a605).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #75      +/-   ##
==========================================
+ Coverage   85.10%   85.20%   +0.10%     
==========================================
  Files          14       14              
  Lines         987      987              
==========================================
+ Hits          840      841       +1     
+ Misses        147      146       -1     

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