Add documentation for new OmniLogic integration. (#14252)

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

source/_integrations/omnilogic.markdown

@@ -0,0 +1,39 @@
+---
+title: Hayward OmniLogic
+description: Instructions on how to configure Hayward OmniLogic integration.
+ha_category:
+  - Sensor
+ha_release: 0.116
+ha_iot_class: Cloud Polling
+ha_config_flow: true
+ha_codeowners:
+  - '@oliver84'
+ha_domain: omnilogic
+---
+
+OmniLogic by [Hayward](https://www.hayward-pool.com/shop/en/pools/omnilogic-i-auomni--1) 
+
+Elite automation for fully featured new pool and spas. OmniLogic® brings backyard control to the forefront of pool technology. Enjoy the luxuries of full automation from the most intuitive app with effortless upgrades to always keep your backyard on the cutting edge.
+
+There is currently support for the following device types within Home Assistant:
+
+- Sensor
+
+## Configuration
+
+Home Assistant offers Hayward OmniLogic integration through **Configuration** -> **Integrations** -> **Hayward OmniLogic**. Enter your `username` and `password` when prompted. Use your registered email address as the username.
+
+## Known limitations
+
+- The platform only supports sensors at the initial release. Future releases will include light/switch/water heater for control of lights, pumps, relays and heaters.
+
+## Debugging integration
+
+If you have problems with the integration you can add debug prints to the log to aid in troubleshooting.
+
+```yaml
+logger:
+  default: info
+  logs:
+    omnilogic: debug
+    homeassistant.components.omnilogic: debug