Rename CRD and RBAC files to match kubebuilder/controller-gen defaults

[jvanz]

The CRD and RBAC file names in the kubewarden-controller repository currently differ from the default names generated by kubebuilder/controller-gen. This mismatch requires manual intervention after running make generate-controller, forcing developers to manually merge the generated files with the custom-named files. This creates friction in the development workflow and introduces potential for errors.

The proposal is to rename these files to match the kubebuilder/controller-gen defaults, enabling automated generation without manual merging. For RBAC files that require custom labels and annotations, the generation process can be adjusted to inject these customizations automatically.

Acceptance Criteria

• Rename CRD files to match kubebuilder/controller-gen default naming convention
• Rename RBAC files (role.yaml, rbac.yaml) to match kubebuilder defaults
• Update Helm chart references to point to the renamed files
• Adjust code generation to automatically add required labels and annotations to RBAC files
• Verify make generate-controller completes without requiring manual file merging
• Update documentation to reflect the new file naming convention
• Check how the CRDs inline html for docs.kubewarden.io. If needed, simplify and drop those inlined html patches.