add Data Table tree view

Is your feature request related to a problem? Please describe.
Currently there's no tree visualisation for a pivot table (like in Excel). It's a really neat layout that allows lazy and partial exploration of the data.

Describe the solution you'd like
A data table capable of (partially and fully) collapsing and expanding the data as if it was a tree.

Describe alternatives you've considered
Using pandas, active_cell and dcc.Store (to keep track of odd/even clicks) to pivot/un-pivot and filter data on cell click.

Additional context
Excel Tree Layout

未指定任何文件、测试或入口点。首先定位现有的 Data Table 和 pivot-table 实现，然后确定分组行或列的表示和渲染方式。当表格按照 issue 中的描述，在树状布局中同时支持部分折叠与展开以及完全折叠与展开时，即视为完成。