Enhance OKX WebSocket client with improved task management and error handling

- Implemented enhanced task synchronization to prevent race conditions during WebSocket operations.
- Introduced reconnection locking to avoid concurrent reconnection attempts.
- Improved error handling in message processing and reconnection logic, ensuring graceful shutdown and task management.
- Added unit tests to verify the stability and reliability of the WebSocket client under concurrent operations.

config/data_collection.json

@@ -23,6 +23,7 @@
         "orderbook"
       ],
       "timeframes": [
+        "5s",
         "1m",
         "5m",
         "15m",
@@ -42,6 +43,7 @@
         "orderbook"
       ],
       "timeframes": [
+        "5s",
         "1m",
         "5m",
         "15m",