ChartShape API in Angular Chart API component

Defines the shape of marker. They are:

• Circle - Renders a circle.
• Rectangle - Renders a rectangle.
• Triangle - Renders a triangle.
• Diamond - Renders a diamond.
• Cross - Renders a cross.
• Plus - Renders a Plus.
• HorizontalLine - Renders a horizontalLine.
• VerticalLine - Renders a verticalLine.
• Pentagon- Renders a pentagon.
• InvertedTriangle - Renders a invertedTriangle.
• Image - Renders a image.
• Circle
• Rectangle
• Triangle
• Diamond
• Cross
• Plus
• HorizontalLine
• VerticalLine
• Pentagon
• InvertedTriangle
• Image
• None