WIP starter workspace

[rgbkrk]

WIP, trying to see what carving the workspace out looks like

[markmiro]

The hard part is figuring out what to do about shadcn components. I think we want to keep them all in one place. This will help make sure the shadcn command-line tool doesn't install a button in two places.

Two options I can think of:

1. Put all shadcn components in shared. Might be weird because it currently only exists for iframe needs.
2. Create a separate package for the shadcn components (basically a design system package)

[rgbkrk]

That's a good point. I think based on how this went I'll just aim to bring over more of the runt packages into the workspace here and not shuffle the others.