New API that return size of single character and terminal

[jcubic]

I have idea for a new feature for jQuery Terminal

New API that will return dimension of single character.

Terminal::char(): { width: number, height: number };

another idea is use:

type size = {
  width: number,
  height: number
};
interface geometry {
    terminal: size;
    char: size;
}
function geometry(): geometry {
    return {
        terminal: { width: 10, height: 10 },
        char: { width: 10, height: 10 },
    }
}

recalculation should only happen on resize and function should just return static object.