chore: add a main declaration in main.py for easier running

Author: tomsquest

src/mediathequeroubaix/main.py

@@ -5,3 +5,6 @@
 app = typer.Typer(add_completion=False, no_args_is_help=True)
 app.add_typer(config.app, name="config", no_args_is_help=True)
 app.add_typer(loans.app, name="loans", no_args_is_help=True)
+
+if __name__ == '__main__':
+    app(prog_name=config.APP_NAME)