refactor(gns3server,tests): StrEnum, ASYNC109 and others

gns3server/utils/notification_queue.py

@@ -38,7 +38,7 @@ class NotificationQueue(asyncio.Queue):
         self._first = True
         self._last_ping = None
 
-    async def get(self, timeout):
+    async def get(self, timeout):  # noqa: ASYNC109 - operation-specific timeout is intentional
         """
         Return a notification, or a ping notification with server information
         at least every `timeout` seconds. The ping used to be generated only
@@ -84,7 +84,7 @@ class NotificationQueue(asyncio.Queue):
             log.warning(f"Could not get CPU and memory usage from psutil: {e}")
         return msg
 
-    async def get_json(self, timeout):
+    async def get_json(self, timeout):  # noqa: ASYNC109 - operation-specific timeout is intentional
         """
         Get a message as a JSON
         """