adds systemd command

[ncode]

• Adds systemd generator
• Adds tests for systemd generation
• Adds the cleanup command

[codecov-commenter]

Codecov Report

Attention: 40 lines in your changes are missing coverage. Please review.

Comparison is base (ecefa11) 54.58% compared to head (b6c0d69) 52.38%.

Files	Patch %	Lines
cmd/systemd.go	0.00%	17 Missing ⚠️
cmd/run.go	0.00%	11 Missing ⚠️
cmd/root.go	0.00%	9 Missing ⚠️
pkg/systemd/systemd.go	72.72%	2 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #11      +/-   ##
==========================================
- Coverage   54.58%   52.38%   -2.21%     
==========================================
  Files           4        6       +2     
  Lines         207      231      +24     
==========================================
+ Hits          113      121       +8     
- Misses         92      107      +15     
- Partials        2        3       +1     

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