WIP ✨ Added Delete API and implemented a unified interface across all commands and plugin options

[camilamacedo86]

Add comprehensive delete functionality to remove APIs and webhooks from projects. Users can now clean up scaffolded resources with automatic code removal, proper validation, and complete state restoration.

What's New

Users can now delete scaffolded APIs and webhooks from their projects:

# Delete APIs
kubebuilder delete api --group crew --version v1 --kind Captain

# Delete webhooks (all types or specific types)
kubebuilder delete webhook --group crew --version v1 --kind Captain
kubebuilder delete webhook --group crew --version v1 --kind Captain --defaulting

# Delete optional plugin features
kubebuilder delete --plugins=helm/v2-alpha
kubebuilder delete --plugins=grafana/v1-alpha
kubebuilder delete --plugins=autoupdate/v1-alpha

Key Features

Automatic Code Removal

Delete commands automatically remove marker-inserted code from cmd/main.go and test files:

• Removes API/webhook imports
• Removes AddToScheme calls
• Removes controller/webhook setup blocks
• Updates PROJECT file

Graceful Error Handling

If automatic removal fails:

• Shows clear warnings (doesn't fail the operation)
• Provides manual cleanup instructions
• References code fragment constants for easy lookup

Closes

#907

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: camilamacedo86

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[camilamacedo86]

/hold cancel

[Copilot]

Pull request overview

Copilot reviewed 51 out of 52 changed files in this pull request and generated 10 comments.

[Copilot]

Pull request overview

Copilot reviewed 51 out of 52 changed files in this pull request and generated 5 comments.

[Copilot]

Pull request overview

Copilot reviewed 54 out of 55 changed files in this pull request and generated 4 comments.

[k8s-ci-robot]

@camilamacedo86: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
pull-kubebuilder-test	65d1a67	link	true	/test pull-kubebuilder-test
pull-kubebuilder-e2e-k8s-1-33-0	65d1a67	link	true	/test pull-kubebuilder-e2e-k8s-1-33-0

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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[k8s-ci-robot]

PR needs rebase.

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