Improve the accessibility of our modals (the color picker and the export dialog)
Implement a focus trap so that tapping through the controls inside them don't escape to outer elements, it also allows to close the modals with the "Escape" key.
* Rename ToolIcon to ToolButton
It makes more semantic sense
* Label and keyboard shortcuts announcement
* Refactor common props for ToolButton
* Better doc outline and form controls
* Adjust color picker
* Styling fixes
Co-authored-by: Christopher Chedeau <vjeuxx@gmail.com>
* Add Native File System API saving/exporting
* Add Native File System API opening
* Add origin trial token placeholder
* Reuse an opened file handle for better saving experience
* Fix file handle reuse to only kick in for Excalidraw files
* Remove reference
* Redisign idea
* Code cleanup
* Fixed to right container
* Reoredered layout
* Reordering panels
* Export dialog
* Removed redunant code
* Fixed not removing temp canvas
* Fixed preview not using only selected elements
* Returned file name on export
* Toggle export selected/all elements
* Hide copy to clipboard button if no support of clipboard
* Added border to swatches
* Fixed modal flickering
* Add Action System
- Add keyboard test
- Add context menu label
- Add PanelComponent
* Show context menu items based on actions
* Add render action feature
- Replace bringForward etc buttons with action manager render functions
* Move all property changes and canvas into actions
* Remove unnecessary functions and add forgotten force update when elements array change
* Extract export operations into actions
* Add elements and app state as arguments to `keyTest` function
* Add key priorities
- Sort actions by key priority when handling key presses
* Extract copy/paste styles
* Add Context Menu Item order
- Sort context menu items based on menu item order parameter
* Remove unnecessary functions from App component
