Raise error when no entities are requested

[christoph-blessing]

• Remove unused event
• Add base class for commands dealing with batches
• Raise error when no entites requested

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.83%. Comparing base (3cf618c) to head (0b45681).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #62      +/-   ##
==========================================
+ Coverage   94.78%   94.83%   +0.05%     
==========================================
  Files          28       29       +1     
  Lines         921      930       +9     
  Branches       95       96       +1     
==========================================
+ Hits          873      882       +9     
  Misses         36       36              
  Partials       12       12              

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