Specify Video AOIs

• Set the Video AOIs for AttentionPercent calculation
• The specification of an single aoi must be an object with 2 keys:
  • "points": value should contain array of objects with two keys 'x' and 'y' with float values
  • "seconds" value should be a float specifying the seconds at which the frame must be extracted
• The specified points (x, y) will be used sequentially to draw a polygon of any shape