Add Tailwind integration (#30385)

* Add Tailwind integration

* tiny tweak

* tweak

---------

Co-authored-by: c0ffeeca7 <38767475+c0ffeeca7@users.noreply.github.com>

source/_integrations/tailwind.markdown

@@ -0,0 +1,49 @@
+---
+title: Tailwind
+description: Instructions on how to integrate a Tailwind garage door controller with Home Assistant.
+ha_category:
+  - Cover
+ha_release: 2024.1
+ha_iot_class: Local Polling
+ha_config_flow: true
+ha_codeowners:
+  - '@frenck'
+ha_domain: tailwind
+ha_zeroconf: true
+ha_platforms:
+  - number
+ha_integration_type: device
+---
+
+The Tailwind integration integrates [Tailwind](https://gotailwind.com/)
+garage door controllers fully locally.
+
+This integration has been tested with the following Tailwind devices:
+
+- [Tailwind iQ3](https://gotailwind.com/products/iq3-smart-garage-controller)
+
+## Prerequisites
+
+To use your Tailwind device with Home Assistant, you need to have your Tailwind
+device setup, connected to your network, and configured in the Tailwind app.
+
+You will need two pieces of information:
+
+- **The IP address of your Tailwind device.** You can find the IP address by
+  going into the Tailwind app and selecting your Tailwind device's cog icon.
+  The IP address is shown in the **Device Info** section.
+- **Local control key token.** To find local control key token, browse to the
+  [Tailwind web portal][token], log in with your Tailwind account, and select
+  the [**Local Control Key**][token] tab. The 6-digit number shown is your
+  local control key token.
+
+[token]: https://web.gotailwind.com/client/integration/local-control-key
+
+{% include integrations/config_flow.md %}
+
+## Provided entities
+
+This integration provides the following entities:
+
+- **Status LED brightness control** - A number entity that allows you to control
+  the brightness of the status LED on the Tailwind device.