SIENTIAPDE-994

Refactor and enhance the laborious workflow and utilities

- Removed outdated test file `test_predictions_batch.py` from workflows.
- Added `input_sample.json` for standardized input configuration.
- Introduced `connectors_config.py` to manage database and service configurations.
- Implemented a logging utility in `logger.py` for consistent logging across the application.
- Created `policies.py` to define retry policies for workflows.
- Developed comprehensive tests for `MLFlowRepository` in `test_model_repository.py`.
- Added extensive tests for `OpcRepository` in `test_opc_repository.py`.
- Updated `test_predictions_batch.py` to reflect new workflow structure and testing methodology.

laborious/activities/activities.py

@@ -40,15 +40,10 @@ class Activities(Postgres, MLFlow, Gates, OPC):
                        notification_handler=notification_handler)
 
         OPC.__init__(self,
-                     name=opc_config['name'],
-                     url=opc_config['url'],
-                     server_uri=opc_config['server_uri'],
-                     cert_path=opc_config['cert_path'],
-                     private_key_path=opc_config['private_key_path'],
-                     server_cert_path=opc_config['server_cert_path'],
+                     opc_servers=opc_config,
                      logger=logger,
                      notification_handler=notification_handler)
 
     @activity.defn(name="prepare_activity")
-    def prepare_activity(self, input_data: dict[str, Any]):
-        super().prepare_activity(input_data)
+    async def prepare_activity(self, input_data: dict[str, Any]):
+        await super().prepare_activity(input_data)