* [feature] grids

* Shows relative grids at different zoom levels

* Update colors

* Restores vec and intersect to monorepo, changes vec.round to vec.toFixed, adds vec.snap

* Snapping in translate and transforms, fix shortcut

* fix bugs in build

* use grid size for nudge too

* update scripts

* Update grid.tsx

* Update grid.tsx

* Fixed!

* Update grid.tsx

* Fix package imports

* Update Editor.tsx

* Improve tsconfigs, imports

* Fix tiny arrow bugs, snap starting points to grid

* Update tsconfig.base.json

* Update shape-styles.ts

* Fix example tsconfig

* Fix translate type error

* Fix types, paths

Co-authored-by: Steve Ruiz <steveruizok@gmail.com>

* Move rko into library, improve multiplayer example

* Add presence layer

* extract to a hook

* Migrate old documents to new structures

* Update repo-map.tldr

* More improvements

* Fix bug on deleted shapes

* Update MultiplayerEditor.tsx

* Add images, read me links

* Add API route for sponsor image

* Update cache max age

* Update readmes

* tweak links

* Update README.md

* move core into repo, apps into apps folder, update tests

* Update scripts for build:core

* improve scripts

* remove noise from www

* Update .gitignore

* Fix focus bug

* add ci test script

* Update main.yml