check config load in start_logging

Co-authored-by: Jeffrey Martin <[email protected]>
Signed-off-by: Leon Derczynski <[email protected]>

garak/command.py

@@ -9,6 +9,8 @@
 
 def start_logging():
     from garak import _config
+    if not _config.loaded:
+        raise RuntimeError("Configuration must be loaded to start logging!")
 
     logging.basicConfig(
         filename=_config.transient.data_dir / "garak.log",