Add Kegtron documentation (#24172)

source/_integrations/kegtron.markdown

@@ -0,0 +1,24 @@
+---
+title: Kegtron
+description: Instructions on how to integrate Kegtron Smart Keg Monitor (Gen 1) into Home Assistant.
+ha_category:
+  - Sensor
+ha_bluetooth: true
+ha_release: 2022.10
+ha_iot_class: Local Push
+ha_codeowners:
+  - '@Ernst79'
+ha_domain: kegtron
+ha_config_flow: true
+ha_platforms:
+  - sensor
+ha_integration_type: integration
+---
+
+Integrates [Kegtron](https://kegtron.com/) Smart Keg Monitor (Gen 1) devices into Home Assistant.
+
+{% include integrations/config_flow.md %}
+
+The Kegtron integration will automatically discover devices once the [Bluetooth](/integrations/bluetooth) integration is enabled and functional.
+
+The integration only supports Smart Keg Monitor devices of the 1st generation (KT-100 and KT-200), which communicate data with Bluetooth LE.