Function encode_nlbt

pub fn encode_nlbt(b: u8) -> char

Translate a u8 to binary representation using the nlbt encoding

nlbt: most significant nibble left, most significant bit top

Left	Right
128	8
64	4
32	2
16	1

use bbd_lib::*;

assert_eq!(
    (0..=255).map(|x| encode_nlbt(x)).collect::<String>(),
    "\
        ⠀⢀⠠⢠⠐⢐⠰⢰⠈⢈⠨⢨⠘⢘⠸⢸⡀⣀⡠⣠⡐⣐⡰⣰⡈⣈⡨⣨⡘⣘⡸⣸⠄⢄⠤⢤⠔⢔⠴⢴⠌⢌⠬⢬⠜⢜⠼⢼⡄⣄⡤⣤⡔⣔⡴⣴⡌⣌⡬⣬⡜⣜⡼⣼\
        ⠂⢂⠢⢢⠒⢒⠲⢲⠊⢊⠪⢪⠚⢚⠺⢺⡂⣂⡢⣢⡒⣒⡲⣲⡊⣊⡪⣪⡚⣚⡺⣺⠆⢆⠦⢦⠖⢖⠶⢶⠎⢎⠮⢮⠞⢞⠾⢾⡆⣆⡦⣦⡖⣖⡶⣶⡎⣎⡮⣮⡞⣞⡾⣾\
        ⠁⢁⠡⢡⠑⢑⠱⢱⠉⢉⠩⢩⠙⢙⠹⢹⡁⣁⡡⣡⡑⣑⡱⣱⡉⣉⡩⣩⡙⣙⡹⣹⠅⢅⠥⢥⠕⢕⠵⢵⠍⢍⠭⢭⠝⢝⠽⢽⡅⣅⡥⣥⡕⣕⡵⣵⡍⣍⡭⣭⡝⣝⡽⣽\
        ⠃⢃⠣⢣⠓⢓⠳⢳⠋⢋⠫⢫⠛⢛⠻⢻⡃⣃⡣⣣⡓⣓⡳⣳⡋⣋⡫⣫⡛⣛⡻⣻⠇⢇⠧⢧⠗⢗⠷⢷⠏⢏⠯⢯⠟⢟⠿⢿⡇⣇⡧⣧⡗⣗⡷⣷⡏⣏⡯⣯⡟⣟⡿⣿\
    ",
);