Add documentation for new Rainforest Eagle-200 platform (#9761)

* Add doc for new component Rainforest Eagle-200

* Added Rainforest Logo and Examples to documentation

* Fixed requested changes

* ✏️ Tweak

* Removed Examples and Variable selectors

* Fixed merge issue

* ✏️ Removal of obsolete code

source/_components/rainforest_eagle.markdown

@@ -0,0 +1,40 @@
+---
+title: "Rainforest Eagle-200"
+description: "Instructions on how to setup the Rainforest Eagle-200 with Home Assistant."
+logo: rainforest_automation_logo.png
+ha_category:
+  - Energy
+  - Sensor
+ha_release: 0.96
+ha_iot_class: Local Polling
+---
+
+A `sensor` platform for the [Rainforest Eagle-200](https://rainforestautomation.com/rfa-z114-eagle-200/) energy gateway.
+
+## Configuration
+
+To enable this sensor, add the following lines to your `configuration.yaml` file:
+
+```yaml
+# Example configuration.yaml entry
+sensor:
+  - platform: rainforest_eagle
+    ip_address: IP_FOR_EAGLE
+    cloud_id: CLOUD_ID_FROM_EAGLE
+    install_code: INSTALL_CODE_FROM_EAGLE
+```
+
+{% configuration %}
+ip_address:
+  description: The local IP address of your Eagle-200 device.
+  required: true
+  type: string
+cloud_id:
+  description: The Cloud ID that is printed on the bottom of the Eagle-200
+  required: true
+  type: string
+install_code:
+  description: The Install Code that is printed on the bottom of the Eagle-200
+  required: true
+  type: string
+{% endconfiguration %}