SIENTIAPDE-1325

Update image tag and enhance OPC metrics tracking

- Bumped image tag from "1.0.1" to "1.1.0" in values.yaml.
- Added new metrics for OPC connection count and error count in metrics.py.
- Refactored OPC connection handling in opc_repository.py to emit new metrics for connection status, count, and errors.

laborious/metrics.py

@@ -120,6 +120,18 @@ OPC_CONNECTION_STATUS = Gauge(
     ['pod_id', 'opc_server_id'],
 )
 
+OPC_CONNECTION_COUNT = Counter(
+    'laborious_opc_connection_count',
+    'Number of connections to the OPC server',
+    ['pod_id', 'opc_server_id'],
+)
+
+OPC_CONNECTION_ERROR_COUNT = Counter(
+    'laborious_opc_connection_error_count',
+    'Number of errors connecting to the OPC server',
+    ['pod_id', 'opc_server_id'],
+)
+
 # ================== Model metrics ==================
 
 MODEL_READ_LAG = Histogram(