metadata audiobook library

delete old scripts
load metadata from file
clean genre
fix artist/comment/composer/series
read books from database
write books to database

pyproject.toml

@@ -40,6 +40,7 @@ dependencies = [
     "packaging==26.0",
     "paho-mqtt==2.1.0",
     "pandas==3.0.2",
+    "pandas-stubs~=3.0.2",
     "pillow==12.2.0",
     "pillow-heif>=1.3.0",
     "pip==25.1.1",