Migrate from `helm/v1-alpha` (deprecated) to `helm/v2-alpha`

🎯 What is the goal?

Stop using the deprecated helm/v1-alpha plugin and migrate this repository to helm/v2-alpha.

🚀 Why adopt helm/v2-alpha?

• helm/v1-alpha was an initial experimental version created to collect community feedback, and it is now deprecated.

• helm/v2-alpha includes bug fixes, improvements, follows common Helm best practices, and adds enhancements from that feedback. It provides a more flexible chart workflow: it generates charts from kustomize output, preserves common customizations, and supports extra options (for example, changing the default chart output path). Also, values is now more complete and exposes better configuration options for your consumers.

🛠️ What are the steps to start using helm/v2-alpha?

1. Copy the current Helm chart into a backup directory (keep it for reference).
2. Make sure you are using the latest local Kubebuilder release: https://github.com/kubernetes-sigs/kubebuilder/releases
3. Delete the current chart directory.
4. Re-generate the Helm scaffolding with: kubebuilder edit --plugins=helm/v2-alpha
5. Compare the new chart with the backup and re-apply any repo-specific changes (if any), like Chart.yaml updates or other customizations.

Note: Created automatically after detecting helm/v1-alpha in the PROJECT file.

Start by inspecting the PROJECT file and the current Helm chart directory, then check the latest Kubebuilder release. Back up and remove the existing chart, run kubebuilder edit --plugins=helm/v2-alpha, and compare the generated chart with the backup. Done means the repository uses helm/v2-alpha and any repository-specific chart customizations are preserved.