Option to add own url for deploy preview

[mrweiland]

The use case you're trying to solve

Url to site is wrong because i set up a https://dev2.queue.online to a hosting - but when deploy preview shows it takes the first one that points to

Problem is that i need to go to https://dev2.queue.online otherwise i cannot login with google.

Change to the action that would solve that use case

Add option to github action to set own url that are shown in deploy preview.

Other considerations

[ssm951]

+1 to this. It is hard to restrict API keys by referrers without this.