feat(updater): add fire and forget mode

[shini4i]

Closes #308 by implementing argo-watcher/fire-and-forget annotation.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
0.0% Duplication on New Code

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: Patch coverage is 41.66667% with 7 lines in your changes missing coverage. Please review.

Project coverage is 56.10%. Comparing base (71044ba) to head (7163da3).

Files	Patch %	Lines
cmd/argo-watcher/argocd/argo_status_updater.go	0.00%	5 Missing and 2 partials ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #309      +/-   ##
==========================================
- Coverage   56.19%   56.10%   -0.10%     
==========================================
  Files          27       27              
  Lines        1847     1859      +12     
==========================================
+ Hits         1038     1043       +5     
- Misses        717      722       +5     
- Partials       92       94       +2     

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