feat: Q7 Get battery level

Author: RaddedMC

roborock/data/b01_q7/b01_q7_containers.py

@@ -115,6 +115,7 @@ class B01Props(RoborockBase):
     water: WaterLevelMapping | None = None
     mode: CleanTypeMapping | None = None
     quantity: int | None = None
+    battery: int | None = None
     alarm: int | None = None
     volume: int | None = None
     hypa: int | None = None

roborock/devices/traits/b01/q7/__init__.py

@@ -84,7 +84,7 @@ async def set_clean_path_preference(self, preference: CleanPathPreferenceMapping
     async def set_repeat_state(self, repeat: CleanRepeatMapping) -> None:
         """Set the cleaning repeat state (cycles)."""
         await self.set_prop(RoborockB01Props.REPEAT_STATE, repeat.code)
-
+        
     async def start_clean(self) -> None:
         """Start cleaning."""
         await self.send(

roborock/roborock_message.py

@@ -165,6 +165,7 @@ class RoborockB01Props(StrEnum):
     WATER = "water"
     MODE = "mode"
     QUANTITY = "quantity"
+    BATTERY = "quantity"
     ALARM = "alarm"
     VOLUME = "volume"
     HYPA = "hypa"