Add Frient docs (#40208)

source/_integrations/frient.markdown

@@ -0,0 +1,27 @@
+---
+title: Frient
+description: Control your Frient Zigbee devices using the Zigbee integration.
+ha_release: '2025.8'
+ha_iot_class: Local Push
+ha_category:
+  - Alarm
+  - Button
+  - DIY
+  - Energy
+  - Plug
+  - Sensor
+  - Siren
+  - Switch
+ha_domain: frient
+ha_integration_type: brand
+ha_platforms:
+  - button
+  - sensor
+  - switch
+ha_iot_standard: zigbee
+ha_brand: true
+---
+
+Frient Zigbee devices work locally and integrate seamlessly with the Zigbee integration in Home Assistant (Zigbee stick required). As all connectivity is happening locally, status updates and controlling your devices happen instantly in Home Assistant.
+
+[Learn more about Zigbee in Home Assistant.](/integrations/zha/)