feat(core): OrthographicView: soft-deprecate array zoom

[Pessimistress]

zoom: number | [number, number] in OrthographicViewState is inconvenient typing-wise in info vis applications. This PR soft-deprecates zoom: [number, number] and adds the following optional fields to OrthographicViewState:

• zoomX
• zoomY
• minZoomX
• maxZoomX
• minZoomY
• maxZoomY

Minor breaking change in some use cases but it is expected to be uncommon, for example:

new Deck({
  views: new OrthographicView({controller: {zoomAxis: 'X'}}),
  initialViewState: {
    target: [0, 0, 0],
    zoom: [0, 2]
  },
  onViewStateChange: ({viewState}) => {
    // this now has no effect because it is shadowed by viewState.zoomX
    viewState.zoom[0] = 0;
  }
});

Change List

• Break OrthographicController away from OrbitController due to increasingly diverged types / behaviors
• New fields in OrthographicViewState type
• Upgrade guide

[coveralls]

coverage: 91.057% (+0.05%) from 91.008%
when pulling 8f145dc on x/ortho-controller
into be97de1 on master.

[chrisgervang]

I agree, zoomX and zoomY will be better for infovis.