Add low accuracy visual representation to the puck

[fabian-guerra]

iOS 14 introduced a new accuracy privacy setting. When the MGLLocationManager.accuracyAuthorization is set to reducedAccuracy the puck should acknowledge this change.

Proposed solution: implement a circular location indicator similar to what Apple Maps is doing with configurability (color, opacity, radius default and overrides, etc)

APIs to explore:

• Implement an approximate location indicator. Add an approximate location view. #381

When approximate location indicator will be displayed in MGLMapView

showsUserLocation	YES
CLAccuracyAuthorizationReducedAccuracy	YES

- [ ] Ability to hide / show the indicator This is done through showsUserLocation adding another indicator will cause confusion.

• Change color, opacity of the indicator. Add an approximate location view. #381 supports changing color.
• Override the indicator

[fabian-guerra]

Fixed in #381 tail work been tracked in #385