[Gauge] Add threshold support to Gauge

[corteggiano]

React-components Thresholds

thresholds can be represented in two ways:

1. by just coloring the gauge
2. by displaying a thinner outer line surrounding the gauge and coloring the gauge. example:

in this example: there are 3 thresholds: A = threshold of < 400 and is green B = threshold of < 500 and is orange C = threshold of < 700 and is red

since the value of the gauge is 300 then threshold A is met and the gauge is colored green

please ignore adding the normal text since that is not supported by our threshold type definition

Dashboard Thresholds

Add ability to:

• Create/Update/Delete thresholds
• Change threshold colors
• Change threshold styles between
  • show as outer ring
  • show as just color

### Acceptance criteria
- [ ] Thresholds can create an outer dial AND change color of gauge
- [ ] Thresholds dont create outer dial but change color of gauge
- [ ] Meeting a threshold changes the inner dial's color
- [ ] Users can add thresholds to