Allow formatting the entire preview url and not just the path

[maxerbox]

Is your feature request related to a problem? Please describe.
I need to format the preview link given from the target_url statuse api.
Indeed, my deploy provider is giving it in the wrong format.

Describe the solution you'd like
A simple hook that would allow me to edit the deploy preview url

Describe alternatives you've considered

Additional context
Could be done like #3812

[erezrokah]

Hi @maxerbox what is the format of the target_url?
Have you tried https://www.netlifycms.org/docs/deploy-preview-links/#configuring-preview-paths?

[maxerbox]

Hi @maxerbox what is the format of the target_url?
Have you tried https://www.netlifycms.org/docs/deploy-preview-links/#configuring-preview-paths?

My target_url is not pointing on a preview version of the website, but on the building page of my deployment provider.
It has this format: https://xxxx.com/maxerbox/sandrine-neau-website/gxb6qir7j
the last part is an extract of the commit.
I need to transform it to this format : https://sandrine-neau-website-gxb6qir7j.xxxx.app
I think a hook is perfect for this case

[erezrokah]

Updated the title based on the suggestion from #3966 (comment)

[typeofweb]

The alternative implemented in #3966 would be more extensible. For example, I need to fetch preview URLs from an API based on the GitHub deployment data – that's no possible with the preview_url_formatter: ['regex', 'replacer'] approach.