IntervalType API in Vue Chart API component

Defines the interval type of datetime axis. They are:

• Auto - Define the interval of the axis based on data.
• Years - Define the interval of the axis in years.
• Months - Define the interval of the axis in months.
• Days - Define the interval of the axis in days.
• Hours - Define the interval of the axis in hours.
• Minutes - Define the interval of the axis in minutes.
• Seconds - Define the interval of the axis in seconds.
• Auto
• Years
• Months
• Days
• Hours
• Minutes
• Seconds