Add ability to disconnect from warp client-side

[DannyBen]

When a client user connects with warp connect <id>, what do they need to do to disconnect?

The usual suspects of Ctrl+D, Ctrl+C or colon (:) did not work.

The solution, whatever it is, should probably be mentioned in the README.

[spolu]

Hi @DannyBen!

Anything that quits the newly opened shell also disconnects the warp, as a warp is a shared shell instance. Do exit or Ctrl+D should work depending on the shell you use.

[spolu]

I'll keep this one opened to update the README

[DannyBen]

The connecting client has no way of exiting then?... When sharing a read only warp session, the viewer cannot type exit and Ctrl+D does nothing.,,, what am I missing?

We were simply testing it with bash, although now that I think about it, maybe I started the session from within tmux, maybe this caused the other side to not be able to Ctrl+D...

[spolu]

Fair point. Indeed Ctrl+D does not work client-side and should probably.
It is hinted here[0] that you should simply close your window, but that's definitely not clear.

[0] https://github.com/spolu/warp#automatic-client-terminal-resize

[spolu]

Thanks @DannyBen