Voltage and slow adc naming (#772)

* voltages in python 

* added voltage values in cmd line, added voltagelist in detector class

* voltage values in python

* slow adc list

python/slsdet/ctb.py

@@ -3,6 +3,8 @@
 from .detector import Detector, freeze
 from .utils import element_if_equal
 from .dacs import DetectorDacs, NamedDacs
+from .voltages import DetectorVoltages, NamedVoltages
+from .slowadcs import DetectorSlowAdcs, NamedSlowAdcs
 import _slsdet
 dacIndex = _slsdet.slsDetectorDefs.dacIndex
 from .detector_property import DetectorProperty
@@ -15,8 +17,17 @@ class Ctb(Detector):
         super().__init__(id)
         self._frozen = False 
         self._dacs = NamedDacs(self)
+        self._voltages = NamedVoltages(self)
+        self._slowadcs = NamedSlowAdcs(self)
     
     @property
     def dacs(self):
         return self._dacs
 
+    @property
+    def voltages(self):
+        return self._voltages
+
+    @property
+    def slowadcs(self):
+        return self._slowadcs