Add turf intersect feature for polygonal intersection

I would like to propose a new feature for turf java, namely polygonal intersection, which is as explained in the turf doc as a method that:

Takes two polygon or multi-polygon geometries and finds their polygonal intersection. If they don't intersect, returns null.

It might help on various occasions while dealing with area-specific features on Android apps, for example, intersecting camera bounds with certain polygons can make a huge deal in making area-aware functionalities.

While looking for such a solution I've encountered geok library:
https://github.com/piruin/geok - written in Kotlin, that apparently achieves this goal, so maybe it may be some kind of inspiration.

首先检查 issue 中描述的 Turf 相交行为，以及所链接的用于处理多边形和多多边形的 geok 库。当为两个受支持的几何图形提供多边形相交结果、在它们不相交时返回 null，并针对具有代表性的 Android 使用场景检查行为时，即视为完成。