Add documentation for Jandy iAqualink component. (#10165)

* Add documentation for Jandy iAqualink component.

* Update configuration snippet/documentation.

* Update ha_release to 0.97 and remove ha_scale.

* Update source/_components/iaqualink.markdown

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

* Bump ha_release.

Co-Authored-By: Martin Hjelmare <marhje52@kth.se>

* Address comments, remove sensor/switch platform mentions

source/_components/iaqualink.markdown

@@ -0,0 +1,58 @@
+---
+title: "Jandy iAqualink"
+description: "Instructions on how to configure Jandy iAqualink integration."
+logo: iaqualink.png
+ha_category:
+  - Climate
+  - Light
+ha_release: 0.99
+ha_iot_class: Cloud Polling
+---
+
+[iAqualink](https://www.iaqualink.com/) by [Jandy](https://www.jandy.com/) allows you to control your pool anytime, anywhere.
+
+There is currently support for the following device types within Home Assistant:
+
+- Climate
+- Light
+
+## Configuration
+
+Home Assistant offers Jandy iAqualink integration through **Configuration** -> **Integrations** -> **Jandy iAqualink**. Simply enter `username` and `password` when prompted.
+
+You can also configure the component via `configuration.yaml`:
+
+```yaml
+# Example configuration.yaml entry
+iaqualink:
+  username: YOUR_USERNAME
+  password: YOUR_PASSWORD
+```
+
+{% configuration %}
+username:
+  description: The username for accessing your iAqualink account
+  type: string
+  required: true
+password:
+  description: The password for accessing your iAqualink account
+  type: string
+  required: true
+{% endconfiguration %}
+
+## Known limitations
+
+- The platform only supports a single pool.
+- Only Pool systems are supported at this time.
+
+## Debugging integration
+
+If you have problems with iAqualink or the integration you can add debug prints to the log.
+
+```yaml
+logger:
+  default: info
+  logs:
+    iaqualink: debug
+    homeassistant.components.iaqualink: debug
+```