Refactor orchestration and email handling
- Updated the orchestration queries to streamline model lookups and added conditions for active models.
- Changed the entry point in the local run script to use the worker module.
- Removed the deprecated samples.json file.
- Enhanced the Email activity to skip sending if the SMTP server is not configured.
- Added timestamp field handling in MongoDB activities for better data management.
- Updated connectors configuration to allow for a None SMTP server.
- Improved the common configuration function to include model configuration details.
SIENTIAPDE-1205: Update timestamp formatting in MongoDB tests
- Modified timestamp handling in test_mongo_db.py to utilize DATETIME_FORMAT_MS_WITH_TZ for consistent formatting across test cases.
- Ensured all timestamp strings include UTC timezone information for improved accuracy in datetime comparisons.
