在graph图上增加brush功能

[whk-lywn]

What problem does this feature solve?

可以集中查看框选部分节点的信息，支持手动选择密集的点，比如一些拓扑图，我们想一次选择拓扑图的许多相连节点，但echarts的graph图不支持brush。

What does the proposed API look like?

类似于matrix scatter图上的筛选功能

[echarts-bot[bot]]

@whk-lywn It seems you are not using English, I've helped translate the content automatically. To make your issue understood by more people and get helped, we'd like to suggest using English next time. 🤗

TRANSLATED

**TITLE** Add the brush function to the graph **BODY** ### What problem does this feature solve? You can view the information of some nodes in a centralized manner, and support manual selection of dense points, such as some topology graphs, we want to select many connected nodes of the topology graph at once, but the graph graph of Echarts does not support brush.  ### What does the proposed API look like? Similar to the filtering function on a matrix scatter plot