Add support for frozen columns/rows

[PhaedrusTheGreek]

Today, I can make the table scrollable horizontally by doing:

<EuiInMemoryTable style={{ overflow: "auto"}}/>

Which immediately leads to the next question of, can columns or rows be frozen?

[cchaos]

@PhaedrusTheGreek Valid request! However, we've split this type of functionality between having a data-grid or simple table display experience. This would fall under the data-grid experience in which we have a new component EuiDataGrid and having frozen rows/columns is on that roadmap (#2839). So we won't be adding that type of support for EuiInMemoryTable or EuiBasicTable.

I'm going to close this as a wont-fix. Sorry if that's not the answer you were hoping for, but I propose that you'd probably be more interested in EuiDataGrid.