Expose workspace ports on external IP

[geropl]

Currently the model we use for accessing workspace ports is different to 'real' machines our users are used to.

Problems with this approach:

• limited to https
• a lot of frontends try to connect to backends using the pattern ${window.location.hostname}:${port}, which does not work with Gitpod (example: trying to get hot loader working #435 (comment) f). Only solution: patch the respective code or put proxy in front

A solution would be to expose workspaces under a IP6 address. Then each workspace would be accessible under: :
Optionally, we could add a (customizable) DNS entry for that as well (see #329)

This would allow other usecases:

• ssh access into workspaces to integrate with local environment
• none-https traffic

[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.

[axonasif]

Please see https://gitpod.slack.com/archives/C02EN94AEPL/p1645623283439319 for context on why this was re-opened 🙏