[Feature request] Any way to visually show the column resize handles in DataGrid?

[jhm-ciberman]

Is your feature request related to a problem? Please describe. Is there any way to visually show the column resize handles in DataGrid? I would like to show a subtly gray line between the columns headers to hint the user that he can drag and resize the columns. Currently it's difficult to tell if a column can be resized or not. In my app, some columns can be resized and some no.

Describe the solution you'd like Maybe adding a property like ResizeGripStyle would be nice.

Describe alternatives you've considered I can't find any way to style the grip without having to build a complicated system.