Create extra configuration directory if it does not exist before starting the watchdog

Author: U039b

mongoose/core/watchdogs.py

@@ -17,6 +17,7 @@
 class DropInConfigurationWatcher:
     def __init__(self, configuration_dir: Path, event_handler: FileSystemEventHandler):
         self.configuration_dir = configuration_dir
+        self.configuration_dir.mkdir(parents=True, exist_ok=True)
         self.event_handler = event_handler
         self.observer = Observer()