Add RuuviTag BLE docs (#24767)

Co-authored-by: Franck Nijhof <frenck@frenck.nl>

source/_integrations/ruuvitag_ble.markdown

@@ -0,0 +1,26 @@
+---
+title: RuuviTag BLE
+description: Instructions on how to integrate RuuviTag BLE devices into Home Assistant.
+ha_category:
+  - Sensor
+ha_bluetooth: true
+ha_release: '2022.12'
+ha_iot_class: Local Push
+ha_codeowners:
+  - '@akx'
+ha_domain: ruuvitag_ble
+ha_config_flow: true
+ha_platforms:
+  - sensor
+ha_integration_type: integration
+---
+
+Integrates [Ruuvi](https://ruuvi.com/)'s RuuviTag BLE devices into Home Assistant.
+
+{% include integrations/config_flow.md %}
+
+The RuuviTag BLE integration will automatically discover devices once the [Bluetooth](/integrations/bluetooth) integration is enabled and functional.
+
+## Supported devices
+
+- [RuuviTag](https://ruuvi.com/ruuvitag/)