Area of Polygon

Function Name: calculatePolygonArea

Description

In this challenge, you're required to write a function named `calculatePolygonArea` that calculates the area of a simple polygon. The polygon is defined by its vertices in a 2D plane. The vertices are provided in the form of an array of points, each point being an array with two integers representing the x and y coordinates. It is guaranteed that the vertices are listed in order, either clockwise or counter-clockwise, and the polygon is non-self-intersecting.

Requirements

• The function `calculatePolygonArea` must take one parameter: an array of points.
• Each point in the array is an array with two integers [x, y].
• The function should return the area of the polygon as a floating-point number.
• Do not assume the polygon is regular. It can be any simple (non-self-intersecting) shape.
• The area should be positive regardless of the order of vertices (clockwise or counter-clockwise).
• You may not use any libraries or built-in functions that directly calculate the area of polygons.
• Implement the Shoelace formula to solve this problem.

Examples

If the input is `[[0, 0], [4, 0], [4, 4], [0, 4]]` (a square), the function should return `16`.If the input is `[[1, 1], [3, 4], [6, 1]]` (a triangle), the function should return `7.5`.

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