Cesium Dynamic Camera Bug

[ericjohnson97]

Cesium for unity only renderers the map based on the state of a camera named DynamicCamera. However Cesium only supports one camera in a georeference. This means only one aircraft can have the camera used to make the map spawn. Because of this when aircraft get to far away from the DynamicCamera the map resolution starts to get lower.

CesiumGS/cesium-unity#327

need to either fix cesium support for multiple dynamic cameras or find a way to keep the map high resolution all the time.