Customize data-layout-path or dataset

[cangSDARM]

Add a getPath(node: Node) function to global config to provide more refined spliter, tab, tabset style Settings.
Allow outside to select class using [data-layout-path="xx"]

This allows you to implement multiple spliter styles on a single page (like codpen.io does):

Or if data-layout-path is internally critical, Can you consider providing an function to set the node's dataset? If you perfer do this, please make it as a function so it's more dynamic