Create a modifier for middle-aligning table row content

[coenkoopmans]

Is your feature request related to a problem? Please describe. Some applications feature tables in which the vertical-align top on the table rows looks weird. Developers want the option to modify this at will.

Describe the solution you'd like Add a modifier (such as .table__row--align-middle or table--align-middle) to cause vertical-align: middle to be applied to the table rows on that table.

Acceptance criteria

• [ ] Modifier added
• [ ] Aligns the rows of the table it is applied to in the vertical middle