Implement bprint and bprintln macros

[byeongkeunahn]

Usage:

use basm::{bprint, bprintln, platform::io::Writer};
let mut writer: Writer = Default::default();
bprint!(writer, "Case #{0}: {1}", 5, 7);     // prints "Case #5: 7"
bprintln!(writer, "Case #{0}: {1}", 5, 7);   // prints "Case #5: 7\n"