feat: make service log level configurable

[neilime]

Superseds #151

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.02%. Comparing base (2c587ab) to head (39f3f38).
Report is 25 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #159      +/-   ##
==========================================
+ Coverage   96.12%   97.02%   +0.89%     
==========================================
  Files           9        9              
  Lines         155      168      +13     
  Branches       19       22       +3     
==========================================
+ Hits          149      163      +14     
+ Misses          6        5       -1     

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[neilime]

Thanks @dvag-gloeckner-daniel