♻️(core) move app ready code to functions

For readability, we move the code block from the `ready` method to a
dedicated function.

This will allow to add more things to do in the `ready` with more focus.

src/backend/core/apps.py

@@ -14,14 +14,7 @@ from people.celery_app import app as celery_app
 logger = logging.getLogger(__name__)
 
 
-class CoreConfig(AppConfig):
-    """Configuration class for the People core app."""
-
-    name = "core"
-    app_label = "core"
-    verbose_name = _("People core application")
-
-    def ready(self):
+def _register_management_commands_as_task():
     """
     Register management command which are enabled via MANAGEMENT_COMMAND_AS_TASK setting.
     """
@@ -30,9 +23,7 @@ class CoreConfig(AppConfig):
         try:
             app_name = get_commands()[command_name]
         except KeyError:
-                logging.error(
-                    "Command %s is not a valid management command.", command_name
-                )
+            logging.error("Command %s is not a valid management command.", command_name)
             continue
 
         command_full_name = ".".join([app_name, command_name])
@@ -64,3 +55,15 @@ class CoreConfig(AppConfig):
 
         # Create the task with the current values
         create_task(command_name, command_full_name)
+
+
+class CoreConfig(AppConfig):
+    """Configuration class for the People core app."""
+
+    name = "core"
+    app_label = "core"
+    verbose_name = _("People core application")
+
+    def ready(self):
+        """Run when the application is ready."""
+        _register_management_commands_as_task()