Add description and validation to `include` and `exclude` fields in Parameters tab of directory apps

[crenshaw-dev]

Summary

~Directory-type apps support include and exclude glob patterns. But those fields must be set in the manifest. There is no UI integration.~ DONE

Motivation

The include/exclude feature has proven confusing and difficult to discover. By adding fields to the UI, potentially with glob-pattern validation, we can help folks find and use the feature.

Proposal

~We should add an "Include" and an "Exclude" field to the Parameters tab of the App Details page for directory apps.~ DONE

The fields should be accompanied by some short description of how they work.

If possible, we should provide glob pattern validation or a link to the glob evaluator's documentation.

The code which needs to be edited is here: https://github.com/argoproj/argo-cd/blob/master/ui/src/app/applications/components/application-parameters/application-parameters.tsx#L281-L306

To test whether your changes work, you should be able to change tabs to the "Manifest" tab and see the exclude and include fields changing after you edit them in the "Parameters" tab.

[crenshaw-dev]

I think this would be reasonably easy to implement, using Kustomize's built-in fields as a guide.

[karengineering]

I would like to work on this.

[crenshaw-dev]

@karengineering go for it! lmk if you need any help.

[crenshaw-dev]

UI support will be in 2.6. I'll leave this issue open to track glob pattern validation and docs-in-UI (tooltips or whatever to clarify how include/exclude works).

[nsinghal12]

Hi @crenshaw-dev Can you please assign this to me. Thanks!