feat: more kogan lx10 error codes

2 - Battery low
4096 - Abnormal main brush

Messages taken from Tuya app

custom_components/tuya_local/devices/kogan_lx10_vacuum.yaml

@@ -89,8 +89,12 @@ primary_entity:
       name: error # robot_fault
       type: bitfield
       mapping:
+        - dps_val: 2
+          value: Battery low
         - dps_val: 32
           value: Drop sensor abnormal
+        - dps_val: 4096
+          value: Abnormal main brush
         - dps_val: 524288
           value: Machine trapped
         - dps_val: 1048576