Add total cycles sensor for Litter-Robot (#147435)

* Add total cycles sensor for Litter-Robot

* Add translatable unit of measurement cycles

homeassistant/components/litterrobot/icons.json

@@ -46,6 +46,9 @@
           "motor_fault_short": "mdi:flash-off",
           "motor_ot_amps": "mdi:flash-alert"
         }
+      },
+      "total_cycles": {
+        "default": "mdi:counter"
       }
     },
     "switch": {

homeassistant/components/litterrobot/sensor.py

@@ -115,6 +115,14 @@ ROBOT_SENSOR_MAP: dict[type[Robot], list[RobotSensorEntityDescription]] = {
                 lambda robot: status.lower() if (status := robot.status_code) else None
             ),
         ),
+        RobotSensorEntityDescription[LitterRobot](
+            key="total_cycles",
+            translation_key="total_cycles",
+            entity_category=EntityCategory.DIAGNOSTIC,
+            entity_registry_enabled_default=False,
+            state_class=SensorStateClass.TOTAL_INCREASING,
+            value_fn=lambda robot: robot.cycle_count,
+        ),
     ],
     LitterRobot4: [
         RobotSensorEntityDescription[LitterRobot4](

homeassistant/components/litterrobot/strings.json

@@ -118,6 +118,10 @@
           "spf": "Pinch detect at startup"
         }
       },
+      "total_cycles": {
+        "name": "Total cycles",
+        "unit_of_measurement": "cycles"
+      },
       "waste_drawer": {
         "name": "Waste drawer"
       }