[Feature] 使用geo3d，渲染省市地区，需要给地区加点击事件

### What problem does this feature solve?

点击不同区域，获取区域的名称的和内容值，对于不同点击不同区域可以触发不同区域对应数据的展示

### What does the proposed API look like?

myChar.on("click",(params)=>{})

Start by locating the geo3d province/city rendering entry point and compare it with the proposed myChar.on("click", (params) => {}) API. Confirm that clicking each region exposes its name and content value and can drive region-specific data display; the work is done when different regions trigger their corresponding behavior.

Written by the indexing model from the issue text.