Add icons for titles and commands

[bollwyvl]

Thanks for ipylab!

Changes:

• adds a new Icon which takes an svgstr
  • can be given to both Panel.title and add_command(icon=).
  • inherits from DOMWidget with an actual View so that it can be used out of these contexts as well...
    • it is a little funky because of how it expects to work inside react, but is fast enough
  • adds a notebook with some links from other notebooks
• improves the jlpm watch command to also build the labextension
• delays loading the widgets implementations and dependencies until they are requested

Open questions:

• would it be better to call it LabIcon for searchability?
• what to do about closable sidebars?
  • the x icon "wins"

[github-actions]

👈 Try it on Binder (branch bollwyvl/ipylab/add-labicon)

[jtpio]

Thanks!

[bollwyvl]

I'll think about some alternatives for the sidebar: maybe it's "just a thing you have to do," as in

• make the Panel not closable
• offer some other way to close it on a panel, or from somewhere else

[jtpio]

This should now be available in 0.7.0: https://github.com/jtpio/ipylab/releases/tag/v0.7.0