Function getPolygonFeature

getPolygonFeature(coordinates, closeCoordinates?): GeoJSON.Feature<GeoJSON.Polygon>
JMap.Geometry.getPolygonFeature

Returns a polygon feature from coordinates.

If the coordinates are not closed the method will close it automatically.
Parameters
- coordinates: JPoint[]
  the polygon coordinates (closed or not closed)
- Optional closeCoordinates: boolean
  if true will close the coordinates (if needed)
Returns GeoJSON.Feature<GeoJSON.Polygon>
Example
```
// will close the coordinates of the polygon and returns the feature
const distance = JMap.Geometry.getPolygonFeature([
   [ 10, 20 ],
   [ 30, 30 ],
   [ 10, 60 ]
])
```