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>
