[improvement] UI (#215)
* move folders out of packages
* Remove custom yarn stuff, remove duplicate readme
* Remove stitches config
* Add README script.
* bump deps
* Fix script
* Update package.json
* rehauls UI
* further rehauls UI
* UI polish
* Update ToolButton.tsx
* Update ToolButton.tsx
* Bump license
* move tldraw to root
* Remove SW
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