remoting: Edit dev server (#11344)

This PR allows configuring existing dev server, right now you can:
- Change the dev servers name
- Generate a new token (and invalidate the old one)

<img width="563" alt="image"
src="https://github.com/zed-industries/zed/assets/53836821/9bc95042-c969-4293-90fd-0848d021b664">


Release Notes:

- N/A