Ability to set `colSpan` for `Cell`

[jussirantala]

Provide a general summary of the feature here

It would be very useful to be able to set colSpan for the td element rendered by Cell.

It is used to make a cell fill more than one column for special table layouts.

🤔 Expected Behavior?

colSpan prop is in Cell prop types and the prop is passed to td.

😯 Current Behavior

colSpan prop is not passed to td.

💁 Possible Solution

Pass colSpan to td. I tried to hack this by modifying DOM directly and it worked.

🔦 Context

We would use it for displaying a error message inside the table. It should be horizontally centered and fill all the columns.

💻 Examples

No response

🧢 Your Company/Team

No response

🕷 Tracking Issue

No response

[reidbarber]

Looks like a duplicate of #5334

[jussirantala]

renderEmptyState prop of TableBody cannot be used because it doesn't let you set a class name for the tr or td generated and we need to have a classname for them (cannot style with parent styles).