Add support for multi-column sort to the `useColumnSort` hook

[lukasmasuch]

Add support for multi-column sort to the useColumnSort hook in the source package.

Proposed API (changes to useColumnSort):

type ColumnSort = {
        column: GridColumn;
        mode?: "default" | "raw" | "smart";
        direction?: "asc" | "desc";
};

type Props = Pick<DataEditorProps, "getCellContent" | "rows" | "columns"> & {
    sort?: ColumnSort | ColumnSort[];
};

Thereby, the first column sort of the list takes priority and after that the data is sorted by the second provided ColumnSort option.

[jassmith]

Yes please