rbac-bootstrap-app release v0.3.0

Added

• Add io.giantswarm.application.managed chart annotation for Backstage visibility.
• Add optional cluster-reader ClusterRole (off by default, enabled via clusterReader.enabled: true) that aggregates into the built-in view ClusterRole and grants read access (get/list/watch) on cluster-scoped resources.

Changed

• Migrate chart metadata annotations to OCI-compatible format.