feat: application resource deletion protection

[alexmt]

Depends on argoproj/gitops-engine#630

PR implements resource deletion with confirmation proposal: introduces Delete=confirm and Prune=confirm sync options that allow end users to require manual confirmation before pruning/deleting of annotated resources.

• As discussed in the proposal PR prune/deletion confirmation is performed on a whole app
• The approval requires adding annotation argocd.argoproj.io/deletion-approved: <ISO formatted timestamp> instead of just true. This allows end user to confirm pruning multiple times for different sync operations.

Screen.Recording.2024-10-22.at.11.17.50.PM.mov

[bunnyshell]

❌ Preview Environment deleted from Bunnyshell

Available commands (reply to this comment):

• 🚀 /bns:deploy to deploy the environment

[gdsoumya]

Do we also need to deal with users deleting the resource directly like using actions to deleted the resource from the cluster? If so did we handle it already (couldn't find it so wanted to verify)

[alexmt]

The RequiresDeletionConfirmation is used during app deletion finalizing. So if user delete resource manually then controller won't attempt to delete it and confirmation won't be necessary. I think this is expected behavior.

[codecov]

Codecov Report

Attention: Patch coverage is 30.88235% with 47 lines in your changes missing coverage. Please review.

Please upload report for BASE (master@ea46572). Learn more about missing BASE report.
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
cmd/argocd/commands/app.go	0.00%	43 Missing ⚠️
pkg/apis/application/v1alpha1/types.go	76.47%	3 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff            @@
##             master   #20497   +/-   ##
=========================================
  Coverage          ?   55.04%           
=========================================
  Files             ?      322           
  Lines             ?    54999           
  Branches          ?        0           
=========================================
  Hits              ?    30272           
  Misses            ?    22127           
  Partials          ?     2600           

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