Improve dev script

[brichet]

Fixes #64 by creating a dev-install command(s) in package.json files.

These command install the python package in dev mode, and the labextension in develop.

The PR also rename install.sh script to dev-install.sh for consistency.

Note

I intentionally not added the dev-uninstall command, which leads to unstable installation, the symlinks not being removed.

[github-actions]

👈 Launch a Binder on branch brichet/jupyter-chat/improve_dev_script

[jtpio]

Thanks!

Maybe a follow-up improvement could be to try support developing on windows? To be more welcoming to new contributors who may be using Windows.

Not sure the bash script would run as is on Windows at the moment.

[jtpio]

Maybe a follow-up improvement could be to try support developing on windows? To be more welcoming to new contributors who may be using Windows.

For now one can use the npm scripts directly so maybe it's enough.

[brichet]

Not sure the bash script would run as is on Windows at the moment.

Right, maybe using a python script instead of bash would do it.