mapbox添加Marker

参考官方文档https://docs.mapbox.com/mapbox-gl-js/api/markers/，再直接看看几个示例：

• Example: Add custom icons with Markers (opens new window)
• Example: Display a popup on hover (opens new window)
• Example: Display a popup on click (opens new window)
• Example: Attach a popup to a marker instance (opens new window)