feat: Add node load submission and display functionality

- Implemented node load status submission in UniProxyController with dynamic cache expiration based on server push interval.
- Added log filtering capability in the admin panel for better log management and analysis.

app/Services/ServerService.php

@@ -25,7 +25,8 @@ class ServerService
             'online',
             'is_online',
             'available_status',
-            'cache_key'
+            'cache_key',
+            'load_status'
         ]);
     }