add support for designSystem to HAX schema

[btopro]

We have 5 buckets of settings to start. These could be extended down the road easily but the general idea....

designSystem: {
  text: true,
  primary: true,
  accent: true,
  card: true,
  designTreatment: true,
},

• hideDefaultSettings - this has been repurposed / split out so that DDD will add in padding, margin, and
• text - font, type face, font size, anything to work on the text itself
• primary - primary color, usually bolder
• accent - an accent color, usually softer
• card - settings which make something appear to be on a card. shadow, border, border radius
• designTreatment - anything that the design system feels like adding in. In DDD's case, headings and p / blockquote can get additional minor treatments like icons and dropCap

[btopro]

All of these are off by default... but it means that anything can enable these features and then we can tweak via the design system as opposed to in hax core itself. Now we'll have to start going through and refactoring things to implement like accent-card, video-player, instruction card, anything that wants to leverage the data- style attributes can.