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- Removed outdated test file `test_predictions_batch.py` from workflows.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/base.py

@@ -1,3 +1,4 @@
+from typing import Any
 from logging import Logger
 from temporalio import activity
 from sientia_do.notifications.handlers import NotificationHandler
@@ -9,7 +10,7 @@ class BaseActivity:
         self.notification_handler = notification_handler
 
     @activity.defn(name="prepare_activity")
-    def prepare_activity(self, input_data: dict[str, Any]):
+    async def prepare_activity(self, input_data: dict[str, Any]):
         """
         Prepare the activity for the notification handler.