feat: Release v0.10 - Modular Architecture & External Config

- Refactor codebase into src/ (preprocessing, translation, assembly)
- Add pipeline/ scripts for individual stages
- Externalize configuration to config/config.yaml
- Fix Cover Image preservation
- Update documentation and manuals

src/common/utils.py

@@ -0,0 +1,25 @@
+import logging
+from pathlib import Path
+
+def setup_logger(name: str, log_file: Path = None, level=logging.INFO):
+    """Sets up a logger with the given name."""
+    logger = logging.getLogger(name)
+    logger.setLevel(level)
+    
+    formatter = logging.Formatter('%(asctime)s - %(name)s - %(levelname)s - %(message)s')
+    
+    if log_file:
+        file_handler = logging.FileHandler(log_file)
+        file_handler.setFormatter(formatter)
+        logger.addHandler(file_handler)
+        
+    stream_handler = logging.StreamHandler()
+    stream_handler.setFormatter(formatter)
+    logger.addHandler(stream_handler)
+    
+    return logger
+
+def ensure_directory(path: Path):
+    """Ensures a directory exists."""
+    if not path.exists():
+        path.mkdir(parents=True, exist_ok=True)