- add GridLayer.js for representing cooridinates grid

- Map Constructor with min and may x and y
- deactivating NorthArrow 6 BoxLayer
- npm updates

src/js/layer/TinLayer.js

@@ -53,7 +53,6 @@ class TinLayer extends Layer {
     async onAdd(map) {
         await this.build(this.getScene());
         map.update();
-        // this.emit('add');
     }
 
     //build BufferGeometry with Index