Create new "themeElements" capability [needs design doc] #3752
Description
Prerequisites
- I have read the documentation
What theme are you using?
other
Is your feature request related to a problem? Please describe.
Many of the themes are nearly identical except for elements of the theme like grids, cards, control wrappers, etc...
Describe the solution you'd like
Create a new themeElements construct (similar to templates) that allows a theme to define things like GridRow, GridColumn, Card, Box, Divider, etc... as well as a way to provide properties to each of these concept at a field, template or widget level. @heath-freenome has a design in his head that really needs to be fleshed out.
Describe alternatives you've considered
No response