feat: Add default configuration for the PaddleOCR-VL-1.5 pipeline.

refactor: Update PaddleOCR-VL model to 1.5 in configuration generation and remove the default.yaml file.

config: Update OCR model_name from TachiwinOCR-VL-1.5 to PaddleOCR-VL-1.5-0.9B.

chore: Update OCR_VL_Recognition model name from PaddleOCR-VL-0.9B to TachiwinOCR-VL-1.5.

feat: Add Gradio UI and inference logic for audio language classification with a custom Whisper encoder.