Enable "New Workspace" button in Project Configuration without first having to use "Run Prebuild" button

[jldec]

When I create a new Project, I may not wish to configure a Prebuild before opening a Workspace.

The New Workspace button is currently disabled, until a Prebuild is run. Let's enable it always.

[svenefftinge]

Also for the Prebuild option, I think we should remove the logs view on the right and instead open a new window with a workspace starting in prebuild.

[gtsiolis]

Cross-posting relevant issue based on #6303 (comment) above:

• Simplify the Project Configuration page by using the Workspace Start page to show Prebuild logs #5785

[jldec]

/schedule

[roboquat]

@jldec: Issue scheduled in the meta team (WIP: 0)

In response to this:

/schedule

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[svenefftinge]

I believe new users just entering gitpod and ending up here will be a little uncertain what to do next, when there are two buttons. I think having one button that starts a workspace with a prebuild in a new tab would be simpler and better.

Worth noting that the singular rebuild page is a great place to educate people about what a rebuild is. Also, it offers a button to skip this, for people who are a little impatient.

[AlexTugarev]

I started working on this in PR #6389.

It's just a draft of a single action that would combine:

1. storing the config
2. triggering a prebuild
3. redirecting to a workspace start in order to see the prebuild logs and the progress over there.

[JanKoehnlein]

/assign @AlexTugarev