Function pad_str
pub fn pad_str<'a>(s: &'a str, width: usize, align: Alignment, truncate: Option<&str>) -> Cow<'a, str>
Pads a string to fill a certain number of characters.
This will honor ansi codes correctly and allows you to align a string
on the left, right or centered. Additionally truncation can be enabled
by setting truncate to a string that should be used as a truncation
marker.