text: Title: Proposal: sort draw.ellipse coordinates by default to make sure they are all contiguous
  Body: ### Description:
  
  Someone just upvoted this old SO answer of mine:
  
  https://stackoverflow.com/questions/62339802/skimage-draw-ellipse-generates-two-undesired-lines
  
  Basically, using plt.plot or any other line drawing software to draw an ellipse from our ellipse coordinates fails because of how the coordinates are sorted (or rather, not sorted):
  
  ![](https://i.stack.imgur.com/XQeWO.png)
  
  The solution is to sort the coordinates based on the angle around the centroid. It's easy/fast enough and would make downstream work simpler, plus I think it's what most users would expect.