Refactor OpcManager initialization and unsubscribe method; enhance logging
- Removed the `initialize_from_config` method from `OpcManager` class and adjusted the constructor to handle configuration directly.
- Improved the `unsubscribe` method to include detailed logging for non-existent subscriptions.
- Updated tests in `test_opc_manager.py` to reflect changes in the `OpcManager` class.
- Commented out Docker-related fixtures in `conftest.py` for potential future use.
- Enhanced test coverage in `test_single_node.py` and `test_data_manager.py` with additional scenarios and assertions.
- Introduced new methods in `Ingestor` and `IngestorManager` classes to manage server subscriptions and leases more effectively.
- Added new tests for `Ingestor` class to validate initialization and slot management logic.
- Implemented logging improvements across various classes to ensure better traceability of actions and errors.
Add temporary functiontal tests, that must be removed soon.
Refactor tests: Remove outdated resource manager tests and add functional tests with Docker and Kafka integration
- Deleted existing unit tests for ResourceManager.
- Introduced new functional tests for single node operations with Redis and Kafka.
- Added Docker Compose setup for test environment.
- Implemented fixtures for Redis and Kafka consumers.
- Created comprehensive tests for data publishing and slot management.
- Added unit tests for DataManager and IngestorManager with mocked dependencies.
- Included tests for OpcManager covering connection, subscription, and data change notifications.
