Always Infer `.gitpod.yml`

[svenefftinge]

Since we now have the possibility to infer a .gitpod.yml and start a workspace with it so that the derived config file is added to the workspace's project folder. I think we can do this always if there is no .gitpod.yml.

see also #6922

[jankeromnes]

On second thought, it's probably a bit too early to put this into Groundwork.

Let's revisit this in a few weeks.