feat(regions): Intent to ship regions.label

[netil]

Issue

#3319

Details

Implement regions.label

regions: [
  {
    ...
    label: {
	text: "Regions 1",
	x: 50,  // position relative of the initial x coordinate
	y: 50,  // position relative of the initial y coordinate
	color: "red",  // color string
	rotated: true.  // make text to show in vertical or horizontal
    },
    ...
  }
]