Style a Row

[Sherlouk]

Is your feature request related to a problem? Please describe.
It would be really helpful if we were able to style each row individually. This could help adding a unified background which fits to each row.

Describe the solution you'd like
As each row is a HStack, it should be quite easy to conditionally add a view modifier to this.

Not sure on exact syntax, I suppose ideally .rowViewModifier(ViewModifier) would be nice.