DataTable Skeleton, have title and description skeleton as optional prop

[SoSubtle]

Title line template: Add ability to remove title and description skeleton from DataTable skeleton

What package(s) are you using?

• carbon-components-react

Detailed description

Hello. The latest DataTableSkeleton includes a skeleton for the datatable title and description. I was wondering if its possible to make the datatable title and description skeleton parts optional. Following the PAL guidelines our datatable component does not have an attached title or description so including the title and desc skeleton looks a bit off.

Please include a brief summary of what you would like to see changed here.
It would be nice to have the option to render the datatable skeleton without the title and description.

What we want : https://codesandbox.io/s/suspicious-raman-hhnyx

The latest version :

[tw15egan]

Closing as dup of #5993, will get a PR up shortly.