chore: split code into multiple packages

[shini4i]

Minor cleanup, and code split into multiple packages to simplify development

[sonarqubecloud]

Quality Gate passed

The SonarCloud Quality Gate passed, but some issues were introduced.

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

See analysis details on SonarCloud

[codecov]

Codecov Report

Attention: 12 lines in your changes are missing coverage. Please review.

Comparison is base (5ee376f) 53.34% compared to head (b113b73) 53.34%.

Files	Patch %	Lines
cmd/argo-watcher/server/server.go	0.00%	6 Missing ⚠️
cmd/argo-watcher/argocd/argo.go	57.14%	3 Missing ⚠️
cmd/argo-watcher/argocd/argo_status_updater.go	75.00%	0 Missing and 1 partial ⚠️
cmd/argo-watcher/main.go	0.00%	1 Missing ⚠️
cmd/argo-watcher/server/router.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #234   +/-   ##
=======================================
  Coverage   53.34%   53.34%           
=======================================
  Files          18       18           
  Lines        1331     1331           
=======================================
  Hits          710      710           
  Misses        556      556           
  Partials       65       65           

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