Add `current` sensor for Shelly RPC devices (#88863)

homeassistant/components/shelly/sensor.py

@@ -439,6 +439,16 @@ RPC_SENSORS: Final = {
         state_class=SensorStateClass.MEASUREMENT,
         entity_registry_enabled_default=False,
     ),
+    "current": RpcSensorDescription(
+        key="switch",
+        sub_key="current",
+        name="Current",
+        native_unit_of_measurement=UnitOfElectricCurrent.AMPERE,
+        value=lambda status, _: None if status is None else float(status),
+        device_class=SensorDeviceClass.CURRENT,
+        state_class=SensorStateClass.MEASUREMENT,
+        entity_registry_enabled_default=False,
+    ),
     "a_current": RpcSensorDescription(
         key="em",
         sub_key="a_current",