Add documentation for Control4 integration (#13941)

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

source/_integrations/control4.markdown

@@ -0,0 +1,34 @@
+---
+title: "Control4"
+description: "Instructions on adding a Control4 system to Home Assistant."
+ha_release: "0.114"
+ha_category: Light
+ha_iot_class: "Local Polling"
+ha_quality_scale: silver
+ha_config_flow: true
+ha_codeowners:
+  - '@lawtancool'
+ha_domain: control4
+---
+
+The Control4 integration allows you to control and monitor lights from your local Control4 system. Your Control4 controller must be running OS 3.0+.
+
+## Configuration
+
+Before setting up, you should assign a static IP address/DHCP reservation on your router to your Control4 controller. Home Assistant must be able to communicate with the controller over the local network; 4Sight remote access is not supported.
+
+Setup the Control4 integration by going to **Configuration** -> **Integrations** -> **Control4**.
+
+Enter the IP address of your controller and your Control4 username and password, then continue. Home Assistant will automatically add all lights it discovers in your Control4 system.
+
+## Options
+
+The Control4 integration offers additional options in **Configuration** -> **Integrations** -> **Control4** -> **Options**:
+
+{% configuration %}
+Seconds between updates:
+  description: How often Home Assistant will poll the Control4 controller for state updates. Very frequent polling could cause the controller to lag, especially with many devices.
+  required: false
+  type: integer
+  default: 5
+{% endconfiguration %}