Add corrector and MQT extraction modules, enhance LSAClient with K-value calculations

- Introduced `corrector_extraction.py` for retrieving MCB K-values from NXCALS.
- Added `mqt_extraction.py` to fetch MQT knob values and calculate corresponding K-values.
- Enhanced `lsa.py` with a new method `calc_k_from_iref` for calculating K-values from current references.
- Implemented `nxcal_knobs.py` to manage NXCalResult data structure and retrieval of knob values.
- Improved logging and error handling across modules for better traceability.

Author: jgray-19