Feature Request: Make addResizeColumns more flexible

[huntabyte]

Currently, we're restricting to passing in a number for the initialWidth, minWidth, maxWidth, etc.

It would be incredible if we could just pass a string that could be any acceptable style value or variable.

[lolcabanon]

Yeah, sometimes I'd like 25ch much! Not sure how it would behave while/after resizing, but for initialWidth or minWidth it would be great.

My current "workaround" is to use an enum, it gives easy consistency :

export const CELL_WIDTH = {
  MAX: 280,
  HUGE: 240,
  LARGE: 200,
  MED: 160,
  SMALL: 120,
  SHORT: 80,
  MIN: 40
};

export default CELL_WIDTH;

table.column({
  // ...
  plugins: {
    resize: {
      initialWidth: CELL_WIDTH.LARGE,
      minWidth: CELL_WIDTH.MED
    }
  }
})