Function advent_of_code_ocr::split_screen

pub fn split_screen(s: &str) -> Vec<String>

Split a string representing a AoC screen into the section strings for the individual characters. This assumes every character is 4 characters wide and a single column is used to split the individual letters.

This will split the string:

###.###....##.###..###..#..#..##..#..#.
#....#..#....#.#..#.#..#.#.#..#..#.#..#.
##..#..#....#.###..#..#.##...#..#.####.
#....###.....#.#..#.###..#.#..####.#..#.
#....#....#..#.#..#.#.#..#.#..#..#.#..#.
###.#.....##..###..#..#.#..#.#..#.#..#.

into the vector of

###    ###.    ..##    ###.    ###.    #..#    .##.    #..#
#...    #..#    ...#    #..#    #..#    #.#.    #..#    #..#
##.    #..#    ...#    ###.    #..#    ##..    #..#    ####
#...    ###.    ...#    #..#    ###.    #.#.    ####    #..#
#...    #...    #..#    #..#    #.#.    #.#.    #..#    #..#
###    #...    .##.    ###.    #..#    #..#    #..#    #..#