Refactoring, packaging and imports optimization

[roelofsc]

Several refactorings and improvements to enhance the project's maintainability, performance, and robustness.

Logging

• Centralized configuration: Moved logging setup to the package's __init__.py. Logging is now configured once upon import using logging.yaml.
• Fallbacks: Updated setup_logging in core/_logs.py to handle missing configuration files gracefully. It now defaults to a basic configuration (logging.basicConfig) instead of raising errors when a configuration file is missing or malformed, making the package more library-friendly.
• Removed redundancy: Eliminated redundant setup_logging calls across multiple modules (fault_detector.py, fault_detection_model.py, quick_fault_detector.py).

Performance

• Vectorized criticality calculation: Refactored calculate_criticality in energy_fault_detector/utils/analysis.py to use numpy vectorized operations and an efficient bounded cumulative sum loop. This provides a performance boost for large time-series datasets.

Infrastructure and Project Structure

• Packaging: Migrated project configuration from legacy setup.py, requirements.txt, and .coveragerc to a modern pyproject.toml structure.
• Tensorflow backend is imported only when needed (lazy).