feat(cli): add argocd context subcommands

[onasser1]

Related #19867

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[onasser1]

/component cli

[nitishfy]

how about argocd context use?

[onasser1]

If I'm not wrong, the switch command does exactly the same as use command, do you mean to change the name of the command from switch to be use?
If this is not what you mean, can you tell me the difference between them?

[nitishfy]

Suggested change

	func NewContextListCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {
	// NewContextListCommand lists the contexts
	func NewContextListCommand(clientOpts *argocdclient.ClientOptions) *cobra.Command {

[onasser1]

Do you think we should to stick to the function comments format in app and login (i.e. https://github.com/argoproj/argo-cd/blob/master/cmd/argocd/commands/app.go#L124)
or apply your change and make the comment more meaningful (Anyway I see that the usage of that commands make it clear anyway) but I'd wait for your answer

[nitishfy]

Thank you for the PR. The code looks good to me. Here are few suggestions:

1. Please write comments in the code wherever required, eg. in the code for switch command.
2. Write unit tests for the utility functions.
3. You'll be required to run codegen to update the docs too.

[nitishfy]

please write unit tests.

[codecov]

Codecov Report

❌ Patch coverage is 49.42529% with 44 lines in your changes missing coverage. Please review.
✅ Project coverage is 62.30%. Comparing base (b260143) to head (e3b7c18).
⚠️ Report is 68 commits behind head on master.

Files with missing lines	Patch %	Lines
cmd/argocd/commands/context.go	50.00%	34 Missing and 4 partials ⚠️
util/localconfig/localconfig.go	45.45%	5 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master   #25077      +/-   ##
==========================================
+ Coverage   60.83%   62.30%   +1.46%     
==========================================
  Files         350      351       +1     
  Lines       60430    49281   -11149     
==========================================
- Hits        36762    30703    -6059     
+ Misses      20754    15653    -5101     
- Partials     2914     2925      +11     

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