feat: project method to go from latlng to screen coords

Author: farfromrefug

src/mapbox.android.ts

@@ -3267,6 +3267,11 @@ export class Mapbox extends MapboxCommon implements MapboxApi {
         }
         return Promise.all(iterations).then((output) => result);
     }
+    project(data: LatLng) {
+        const mapboxPoint = new com.mapbox.mapboxsdk.geometry.LatLng(data.lat, data.lng);
+        const screenLocation = this._mapboxMapInstance.getProjection().toScreenLocation(mapboxPoint);
+        return { x: screenLocation.x, y: screenLocation.y };
+    }
 }
 
 export class Layer implements LayerCommon {

src/mapbox.ios.ts

@@ -2573,6 +2573,12 @@ export class Mapbox extends MapboxCommon implements MapboxApi {
             }
         });
     }
+
+    project(data: LatLng) {
+        const theMap: MGLMapView = this._mapboxViewInstance;
+        const { x, y } = theMap.convertCoordinateToPointToView({ latitude: data.lat, longitude: data.lng }, theMap);
+        return { x, y };
+    }
 }
 
 const _addObserver = (eventName, callback) => NSNotificationCenter.defaultCenter.addObserverForNameObjectQueueUsingBlock(eventName, null, NSOperationQueue.mainQueue, callback);