https://www.lightningdesignsystem.com/components/progress-ring/
<c:ProgressRing size="large" percent="50" variant="active-step" icon="utility:fallback" label="1" />
size [large] default is ''
percent [0-100] default is 0
variant [complete|warning|expired|active-step] default is ''
icon [{icon:name}] default is ''
label [0-99A-Z] default is ''