Add child lock for tplink thermostats (#129649)

homeassistant/components/tplink/icons.json

@@ -68,6 +68,9 @@
         "state": {
           "on": "mdi:sleep"
         }
+      },
+      "child_lock": {
+        "default": "mdi:account-lock"
       }
     },
     "sensor": {

homeassistant/components/tplink/strings.json

@@ -190,6 +190,9 @@
       },
       "fan_sleep_mode": {
         "name": "Fan sleep mode"
+      },
+      "child_lock": {
+        "name": "Child lock"
       }
     },
     "number": {

homeassistant/components/tplink/switch.py

@@ -48,6 +48,9 @@ SWITCH_DESCRIPTIONS: tuple[TPLinkSwitchEntityDescription, ...] = (
     TPLinkSwitchEntityDescription(
         key="fan_sleep_mode",
     ),
+    TPLinkSwitchEntityDescription(
+        key="child_lock",
+    ),
 )
 
 SWITCH_DESCRIPTIONS_MAP = {desc.key: desc for desc in SWITCH_DESCRIPTIONS}

tests/components/tplink/fixtures/features.json

@@ -34,6 +34,11 @@
     "type": "Switch",
     "category": "Config"
   },
+  "child_lock": {
+    "value": true,
+    "type": "Switch",
+    "category": "Config"
+  },
   "current_consumption": {
     "value": 5.23,
     "type": "Sensor",

tests/components/tplink/snapshots/test_switch.ambr

@@ -173,6 +173,52 @@
     'state': 'on',
   })
 # ---
+# name: test_states[switch.my_device_child_lock-entry]
+  EntityRegistryEntrySnapshot({
+    'aliases': set({
+    }),
+    'area_id': None,
+    'capabilities': None,
+    'config_entry_id': <ANY>,
+    'device_class': None,
+    'device_id': <ANY>,
+    'disabled_by': None,
+    'domain': 'switch',
+    'entity_category': <EntityCategory.CONFIG: 'config'>,
+    'entity_id': 'switch.my_device_child_lock',
+    'has_entity_name': True,
+    'hidden_by': None,
+    'icon': None,
+    'id': <ANY>,
+    'labels': set({
+    }),
+    'name': None,
+    'options': dict({
+    }),
+    'original_device_class': None,
+    'original_icon': None,
+    'original_name': 'Child lock',
+    'platform': 'tplink',
+    'previous_unique_id': None,
+    'supported_features': 0,
+    'translation_key': 'child_lock',
+    'unique_id': '123456789ABCDEFGH_child_lock',
+    'unit_of_measurement': None,
+  })
+# ---
+# name: test_states[switch.my_device_child_lock-state]
+  StateSnapshot({
+    'attributes': ReadOnlyDict({
+      'friendly_name': 'my_device Child lock',
+    }),
+    'context': <ANY>,
+    'entity_id': 'switch.my_device_child_lock',
+    'last_changed': <ANY>,
+    'last_reported': <ANY>,
+    'last_updated': <ANY>,
+    'state': 'on',
+  })
+# ---
 # name: test_states[switch.my_device_fan_sleep_mode-entry]
   EntityRegistryEntrySnapshot({
     'aliases': set({