Move geometry devices, some utilities to own repositories

src/calng/RoiTool.py

 import threading
 
 import numpy as np
+from calngUtils import trackers
 from karabo.middlelayer import (
     AccessLevel,
     AccessMode,
@@ -130,7 +131,7 @@ class RoiTool(Device):
         self._bins = None
         self._means = None
         self._bin_lock = threading.RLock()
-        self._rate_tracker = utils.WindowRateTracker()
+        self._rate_tracker = trackers.WindowRateTracker()
 
     async def onInitialization(self):
         self.state = State.ON