Add workspace session time to gp info

[loujaybee]

Currently a workspace cannot run for more than 36 hours continuously. However, there is no way for a user to know officially how long the workspace has been running, and to gauge how much uptime they have left on the running workspace. You can use the uptime command to show the session time, however I'm not sure how accurate this is. It would be good to add both:

• Current uptime
• Remaining uptime (36 hours - current uptime)

Into the gp info command, so that users are at least aware of, and can track this limitation.

See related documentation:

• https://github.com/gitpod-io/website/pull/3341/files

And issue:

• gp timeout set allows >24 hour timeout (and < 1s) #16085

[akosyakov]

I'm not sure info is a good place. It is rather static info. Maybe top is better? It reflects dynamic characteristics.

[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.