XYZ Tiles接口
Google Maps https://mt1.google.com/vt/lyrs=r&x={x}&y={y}&z={z}
Google Satellite https://www.google.cn/maps/vt?lyrs=s@189&gl=cn&x={x}&y={y}&z={z}
Google Satellite Hybrid https://mt1.google.com/vt/lyrs=y&x={x}&y={y}&z={z}
Google Terrain https://mt1.google.com/vt/lyrs=t&x={x}&y={y}&z={z}
Google Roads https://mt1.google.com/vt/lyrs=h&x={x}&y={y}&z={z}