Signed-off-by: Andrei Kvapil <kvapss@gmail.com>
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Enhanced database user management with role definitions for `admin`
and `readonly` users.
- Introduced support for additional environment variables in the MariaDB
operator deployment.
- Added new RBAC roles for viewing and editing MariaDB resources.
- **Changes**
- Updated configuration structure for database and user management,
shifting from arrays to objects.
- Improved webhook certificate management with revision history control.
- Updated image repository for the MariaDB operator.
- **Bug Fixes**
- Adjusted permissions in RBAC configuration for better security and
resource management.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>
