The `chill.role` tag has been renamed to `chill_main.provide_role` to prevent any confusion and make the namespaces more consistent. During this process, the class RoleProvidersCompilerPass was deleted, simplifying the role provision process by injecting tagged services directly into the RoleProvider. The change is also reflected in multiple YAML service configurations and explained in the MIGRATION.md file.
Replaced most of the invocations of getDoctrine()->getManager() with ManagerRegistry->getManager(), and added ManagerRegistry injection to controllers where needed. This is part of an ongoing effort to improve code clarity, and avoid unnecessary method chaining in various parts of the codebase.
