Enable multiple profiles in one sketch

[Irev-Dev]

Think trying to sketch the outline a doughnut, you need the inner and outer ring, We should enable this in one sketch mode session

code would be

const part = startSketchOn('XY')
  |> startProfileAt([...], %) // first
  |> Line(...)
  |> Line(...)
  |> close(%)
  |> startProfileAt([...], %) // second
  |> Line(...)
  |> Line(...)
  |> close(%)

This mean that the sketch group data will need to change to allow more nested data (array of arrays perhaps). In this regards it might be worth doing this issue #1553 at the same time.

[jessfraz]

related to #1876

[jessfraz]

closing as dupe of #1876