feat: added --cascade flag support for handling application set deletion #18614

[nikzayn]

Checklist:

• The title of the PR states what changed and the related issues number (used for the release note).
• The title of the PR conforms to the Toolchain Guide
• I've included "Closes [ISSUE FR: Non-cascading deletion of AppSet supported natively by ArgoCD #18614]" or "Fixes [ISSUE FR: Non-cascading deletion of AppSet supported natively by ArgoCD #18614]" in the description to automatically close the associated issue.
• Does this PR require documentation updates?
• I've updated documentation as required by this PR.
• I have signed off all my commits as required by DCO
• My feature updates the CLI argocd appset delete
• My build is green (troubleshooting builds).
• My new feature complies with the feature status guidelines.

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[nikzayn]

as a flag, we are using in command.Flags

[reggie-k]

Thanks for the PR!
Where is the logic that uses the new param and performs the cascading deletion based on it?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 5 lines in your changes missing coverage. Please review.

Project coverage is 55.95%. Comparing base (1e359c8) to head (e8d8adc).
Report is 1 commits behind head on master.

Files with missing lines	Patch %	Lines
cmd/argocd/commands/applicationset.go	0.00%	5 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #18770      +/-   ##
==========================================
+ Coverage   55.93%   55.95%   +0.01%     
==========================================
  Files         322      322              
  Lines       44673    44677       +4     
==========================================
+ Hits        24989    24998       +9     
+ Misses      17092    17091       -1     
+ Partials     2592     2588       -4     

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[pasha-codefresh]

I have reviewed your change again. In order to pass cascade option to applicationset controller, you need pass it applicationset.ApplicationSetDeleteRequest. But also add support on server side for it