moonraker: report websocket connection via /server/info

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

moonraker/moonraker.py

@@ -614,7 +614,8 @@ class Server:
             'plugins': list(self.components.keys()),
             'failed_plugins': self.failed_components,
             'registered_directories': reg_dirs,
-            'warnings': self.warnings
+            'warnings': self.warnings,
+            'websocket_count': self.get_websocket_manager().get_count()
         }
 
     async def _handle_config_request(self,

moonraker/websockets.py

@@ -364,6 +364,9 @@ class WebsocketManager(APITransport):
         for ws in list(self.websockets.values()):
             ws.queue_message(msg)
 
+    def get_count(self) -> int:
+        return len(self.websockets)
+
     async def close(self) -> None:
         if not self.websockets:
             return