Provide access to the app per workspace

**Is your feature request related to a problem? Please describe.**
How do I find the url to access my app in the different workspaces (without knowing how it is computed) ? With the production workspace, it is somehow available during the Approval process and when approved, I can navigate with the Experience Shell. In dev, I can copy / paste it in the terminal when running `aio app deploy`.
But in staging when deploy is managed by the CI/CD ? In the Github action output, the URL is partially obfuscated because it contains on of the secret (the runtime namespace) thus I need to compute it myself.

As a developer, you need to know how the url is constructed to compute it.

**Describe the solution you'd like**
In the Console, it could be as simple as adding a link on the workspace dashboard...!
In the cli, it might be given by a console command.

cc @meryllblanchet