Add "Open web UI" button for OTBR add-on

[philnagel]

What type of request is this?

Enhancement to existing add-on

Existing add-on name

OpenThread Border Router

Describe the add-on or add-on enhancement

The Open Thread Border router add on has a UI (though it needs to be enabled by specifying a port). There is no "Open web UI" button like other add-ons have. It would be awesome to have this button available for the add-on.
Is it not there because the UI is not on by default? If so, maybe that can be changed and the button can be there.

See Matter add-on for an example of the button:

Use cases

It would make diagnosing issues and viewing config/status of the add-on while connecting to HA remotely or via the companion app much easier. As it stands, the add-on port would need to be exposed separately. If there was a button, accessing the add-ons web page UI would be more convenient and more like it works with other add-ons.

Upstream project

No response

Anything else?

No response

[Gunni]

Issue for this feature: home-assistant/addons#4100