Fix missing Shelly external input (#47028)

* Add support for external input (Shelly 1/1pm add-on)

* Make external sensor naming consistent

* Fix case consistency

homeassistant/components/shelly/binary_sensor.py

@@ -73,6 +73,11 @@ SENSORS = {
         default_enabled=False,
         removal_condition=is_momentary_input,
     ),
+    ("sensor", "extInput"): BlockAttributeDescription(
+        name="External Input",
+        device_class=DEVICE_CLASS_POWER,
+        default_enabled=False,
+    ),
     ("sensor", "motion"): BlockAttributeDescription(
         name="Motion", device_class=DEVICE_CLASS_MOTION
     ),
@@ -86,7 +91,7 @@ REST_SENSORS = {
         default_enabled=False,
     ),
     "fwupdate": RestAttributeDescription(
-        name="Firmware update",
+        name="Firmware Update",
         icon="mdi:update",
         value=lambda status, _: status["update"]["has_update"],
         default_enabled=False,

homeassistant/components/shelly/sensor.py

@@ -133,7 +133,7 @@ SENSORS = {
         available=lambda block: block.sensorOp == "normal",
     ),
     ("sensor", "extTemp"): BlockAttributeDescription(
-        name="Temperature",
+        name="External Temperature",
         unit=temperature_unit,
         value=lambda value: round(value, 1),
         device_class=sensor.DEVICE_CLASS_TEMPERATURE,
@@ -155,7 +155,7 @@ SENSORS = {
         icon="mdi:angle-acute",
     ),
     ("relay", "totalWorkTime"): BlockAttributeDescription(
-        name="Lamp life",
+        name="Lamp Life",
         unit=PERCENTAGE,
         icon="mdi:progress-wrench",
         value=lambda value: round(100 - (value / 3600 / SHAIR_MAX_WORK_HOURS), 1),