feat: implement resume functionality in batch feature extraction to skip processed samples

feat: refactor worker function for batch feature extraction to support multiprocessing

feat: implement parallel processing for batch feature extraction to improve performance

feat: enhance feature extraction with additional spectral and temporal metrics

fix: gitignore models/data and add logging to feature extraction

fix: add debug logging for vocal extraction failures in extract_sample_features

feat: implement batch feature extraction for AURIS training pipeline