Clean up pass towards using bootstrap in template, not all hard-coded values are
converted yet but those have been done:
- `width/height: 100%` by `map-get($sizes, 100)`
- `margin/padding` with hard coded value with `map-get($spacers, X)`
- `border: 1px` by `$border-width`
- hard-coded black and white by `$black`/`$white`
- hard-coded `border-radius: 50%` by `@extend .rounded-circle;`
task-2223232
closesodoo/odoo#72321
Signed-off-by: Sébastien Theys (seb) <seb@odoo.com>