Artem Grinev authored Jan 13, 2022 and Nate Graham committed Jan 13, 2022

This MR adds a Blue Ocean-styled checkboxes and radio buttons. 
They follow Adwaita's approach to draw box in CSS and provide the image itself in a SVG. This allows us to control coloring of the box more precisely and also add an check/uncheck animation.

CCBUG: 443919