Basic Switch
use class .switch-label to add a label to switch.
Colors
Use class .custom-control-#{$color-name} with .custom-switch to change switch's
color
Primary
Secondary
Success
Danger
Warning
Info
Dark
Icons
Use class .switch-icon-left & .switch-icon-right inside of
.custom-control-label to create a switch with icon.
Primary
Secondary
Success
Danger
Warning
Info
Dark