[Feature Request] Allow/Document Sub Columns in the Table

[RabbidDog]

Feature Request

To be able to group columns visually

Expected Behavior

We are able to define sub columns in the columns OR group some columns together. Only grouping at a visual level is enough. For example, we are able to define a column header and sub-column header and the columns grouped together have a vertical boundary on both sides

Current Behavior

It seems its not possible to make sub columns