Add label FILL, and add default deviceSetup to CFG

Author: James Boulton

dashio/device.py

@@ -555,6 +555,7 @@ def __init__(
         self._device_commands_dict['CFG'] = self._make_cfg64
         self.controls_dict = {}
         self._cfg = {}
+        self._cfg["deviceSetup"] = ''
         self._device_id_str = f"\t{device_id}"
         self._cfg["numDeviceViews"] = 0
         if cfg_dict is not None:

dashio/iotcontrol/enums.py

@@ -200,6 +200,7 @@ class LabelStyle(Enum):
     BASIC = "BASIC"
     GROUP = "GROUP"
     BORDER = "BORDER"
+    FILL = "FILL"
 
 
 class KnobStyle(Enum):