devices: added magnet position sensor functions and moved set_transmission function

src/aare/daq/devices.py

@@ -86,19 +86,24 @@ class BeamlineDevices:
 
         self.__cryojet_x = MyMotor(f"{BEAMLINE}-ES-CS:TRX") #currently in is 5 out is 15?
 
+        self.magnet_position_sensor = PV(f"{BEAMLINE}-ES-DF1:CBOX-CMP1")
+        self.magnet_position_sensor_readout = PV(f"{BEAMLINE}-ES-DF1:CBOX-USER1")
+
+
 
 
 # Transmission
     @property
     def transmission(self) -> float:
         return 1.0
-    def set_transmission(self, value: float, /, wait: bool = True):
-        pass
 
     @transmission.setter
     def transmission(self, value: float):
         self.set_transmission(value, wait=False)
 
+    def set_transmission(self, value: float, /, wait: bool = True):
+        pass
+
 # Lamp light
     @property
     def lamp_light(self) -> float: