Function rdcl_aoc_helpers::math::taxi_cab_4d

pub fn taxi_cab_4d<T>(
    (xa, ya, za, wa): (T, T, T, T), 
    (xb, yb, zb, wb): (T, T, T, T)
) -> T where
    T: Add<T, Output = T> + Sub<T, Output = T> + Ord + Copy, 

The taxi cab distance between two 4D points.