Add Rainforest RAVEn integration (#24505)

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

source/_integrations/rainforest_raven.markdown

@@ -0,0 +1,20 @@
+---
+title: Rainforest RAVEn
+description: Instructions on how to setup Rainforest RAVEn devices with Home Assistant.
+ha_category:
+  - Energy
+  - Sensor
+ha_release: 2024.2
+ha_iot_class: Local Polling
+ha_codeowners:
+  - '@cottsay'
+ha_domain: rainforest_raven
+ha_platforms:
+  - sensor
+ha_config_flow: true
+ha_integration_type: integration
+---
+
+The RAVEn family of devices from Rainforest Automation, Inc. includes the [EMU-2](https://www.rainforestautomation.com/rfa-z105-2-emu-2-2/), a wireless device that reads energy usage information directly from your utility meter. This integration connects to a RAVEn-compatible device attached to the Home Assistant instance via USB to integrate instantaneous power demand, accumulated usage, and current unit pricing.
+
+{% include integrations/config_flow.md %}