Datatable grid view should also have named slot for each column.

[darkopetreski]

The data table has "body-cell-[name]" slot giving the user posibility to change specific columns, expecially usefull to add some action buttons.
When the datatable is in grid mode (expecially usefull for mobile view) there is a slot "item" for the full item. Creating all the columns manually, for many grids, expecially if the grids has a lot of colums is very tedious work. Instead, it will be very usefull to have also "item-cell-[name]" so change some columns. This will speare a lot of development time.