Adds Elgato Avea integration (#9559)

* Adds Elgato Avea integration

* ✏️ Tweak

* Update source/_components/avea.markdown

Co-Authored-By: Klaas Schoute <klaas_schoute@hotmail.com>

* Update avea.markdown

* ✏️ Tweaks

source/_components/avea.markdown

@@ -0,0 +1,21 @@
+---
+title: "Elgato Avea"
+description: "Instructions on how to integrate Elgato Avea with Home Assistant."
+logo: avea.png
+ha_category:
+  - Light
+ha_release: 0.97
+ha_iot_class: Local Polling
+---
+
+[Elgato Avea](http://web.archive.org/web/20170930210431/https://www.elgato.com/avea) is a Bluetooth light bulb that is no longer supported by the manufacturer. The `avea` integration allows you to control all your Avea bulbs with Home Assistant.
+
+### Configuration
+
+To enable Avea, add the following lines to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+light:
+  - platform: avea
+```