* fix(checkbox): prevent transition inheritance
* fix(checkbox): use SVG for checkbox icon
* fix(checkbox): match MD spec size
* refactor(checkbox): use height/width custom props over size
* fix(checkbox): match MD spec off state border color
* feat(checkbox): animate check path for MD
- updates components to use shadow DOM or scoped if they require css variables
- moves global styles to an external stylesheet that needs to be imported
- adds support for additional colors and removes the Sass loops to generate colors for each component
- several property renames, bug fixes, and test updates
Co-authored-by: Manu Mtz.-Almeida <manu.mtza@gmail.com>
Co-authored-by: Adam Bradley <adambradley25@gmail.com>
Co-authored-by: Cam Wiegert <cam@camwiegert.com>