ErrorBarType API in Angular Chart API component

Defines the type of the error bar. They are:

• Fixed - Renders a fixed type error bar.
• Percentage - Renders a percentage type error bar.
• StandardDeviation - Renders a standard deviation type error bar.
• StandardError -Renders a standard error type error bar.
• Custom -Renders a custom type error bar.
• Fixed
• Percentage
• StandardDeviation
• StandardError
• Custom