[feat] #7 geojson data modeling

 - Point.java added with tests
 - Position updated with new method to get coordinates as array

 -

Author: Ramachandran Nellaiyappan

src/main/java/com/github/nramc/dev/journey/api/geojson/Point.java

@@ -25,8 +25,8 @@ public static Point of(GeoJsonType type, Position coordinates) {
         return new Point(coordinates);
     }
 
-    public static Point of(Position position) {
-        return new Point(position);
+    public static Point of(Position coordinates) {
+        return of(GeoJsonType.POINT, coordinates);
     }
 
 }