SIENTIAPDE-1248: Integrate MinIO for object storage and add related configurations

This commit introduces MinIO integration for object storage within the Model Manager system. It includes:

- Added MinIO activity class for file operations (fetch, delete).
- Updated Activities orchestrator to include MinIO activities.
- Added MinIO configuration builder to utils/connectors_config.py.
- Added environment variables for MinIO configuration in .env.example.
- Added boto3 and botocore dependencies to requirements.txt.
- Added unit tests for MinIO activities.

model_manager/worker/worker.py

@@ -41,6 +41,7 @@ with workflow.unsafe.imports_passed_through():
     from model_manager import metrics
     from model_manager.activities.activities import Activities
     from model_manager.utils.connectors_config import (
+        build_minio_config,
         build_mlflow_config,
         build_mongodb_config,
         build_postgres_config,
@@ -106,6 +107,7 @@ async def main():
     activities = Activities(
         postgres_config=build_postgres_config(),
         mlflow_config=build_mlflow_config(),
+        minio_config=build_minio_config(),
         logger=logger,
         notification_handler=notification_handler,
     )