[ic-data-table]: Column width and table sizing code snippet

[jd239]

What component is this related to?

ic-data-table

Why do we need it?

Code snippets for column width and table sizing.

Related open issues

https://github.com/mi6/ic-ui-kit/issues/1005

Please note: This is relying on https://github.com/mi6/ic-ui-kit/pull/2423 being merged in beforehand