Make it easier to restart a remote session from desktop VSCode

[loujaybee]

When using VS Code Desktop, the user typically goes to Gitpod, uses the command pallette, and opens their changes on their local machine to make edits, however if you go away and come back, the workspace will have closed, and it might not be transparent to the user about the best way to restart their session, regain their code and continue working.

Source

I don't have a particular solution in mind, we could potentially enable this workflow via the local companion app, to list the running workspaces and tab through to restart, we could do it via a command in the pallette on the local VS Code, or provide better pop-up notifications on VSCode to re-establish the remote session.

Similar to #6679 for JetBrains.

Also related: #6602

[svenefftinge]

I think a frontend extension in VS Code that shows a notification when the workspace timed out (or alters the status bar color) would be great including a command to start the workspace again.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[loujaybee]

Removing from inbox, quite likely the solution here will be dependent on work on the public API.

See: #8512 and #7900

Also we likely need to integrate SSH gateway into VS Code desktop first: #8513