add branch + dev deployment

[kadhonn]

We should think about dev and branch deployments.

What versions do we want to deploy?

One Staging/Dev environment permanently running would be a good idea, so we can see changes we merged before deploying them to production.

Do we want branch deployments? I think not every branch needs to be deployed automatically, so maybe create a github action to do that? cleanup when the branch is deleted/merged?
Or do we rather want PR-deployments instead of branch deployments?

What changes should be done from production to branch deployment?

I do not want to run all collectors for each branch / dev deployment, so the data will have to come from production?