1. Proposed title of this feature request
Add warning for child resources while deleting the applicationset

2. What is the nature and description of the request?
A warning should be displayed while we delete the applicationset for it's child resources to prevent them from accidental deletion.

3. Why does the customer need this? (List the business requirements here)
To prevent the accidental deletion of the child resources which are created by the applicationset

4. List any affected packages or components.
ApplicationSet