Short URL and IDs for sessions

[svenwinkelmann]

Is your feature request related to a problem? Please describe.
The URL to join a hosted session on codetogether is very long and the only possibility to share it is with electronic communication. For teaching sessions on which you do not have addresses of your participants (e.g. in a class room), it is cumbersome to share the link or you have to use external URL shorteners.

Describe the solution you'd like
Having an ID for either a session or your account, similar to zoom meeting-ids or zoom personal rooms, would be perfect.

Describe your primary environment
Host VSCode or IntelliJ. Participants mostly browser.

Describe alternatives you've considered
Using bitly

Additional context
I plan to mirror my coding during university lectures, because for students it's convenient to have the code in their used environment and be able to scroll on their own pace.