函数 max

max(
    iteratorOrIterable:
        | Iterable<number, any, any>
        | Iterator<number, any, any>,
): number
获取一个数组或者迭代器中的最大值，注意元素类型必须是数值
参数
- iteratorOrIterable: Iterable<number, any, any> | Iterator<number, any, any>
返回 number
示例
```
// example1
var m = max([1, 2, 3]);

// example2
var objs = [{x: 1}, {x: 2}];
var objsItr = objsIterator<number>(objs, ['x']);
for (let d of objsItr) {
    console.log(d);
}
var m2 = max(objsItr);
```
- 定义于 earthsdk/earthsdk3/src/xbsj-base/xr-base-utils/minmax.ts:18