ssb_parser

1st level component of ssb_implementation.

Changes

lib.rs:

Parser component of subtitle format implementation.

// Imports
use std::{
    convert::TryFrom,
    fs::File,
    io::{BufReader,Cursor}
};
use ssb_parser::{Ssb,SsbRender};
// Data
let ssb_reader1 = Cursor::new("...");
let ssb_reader2 = BufReader::new(File::open("/foo/bar.ssb").unwrap());
// Parsing
let ssb = Ssb::default()
    .parse_owned(ssb_reader1).unwrap()
    .parse_owned(ssb_reader2).unwrap();
let ssb_render = SsbRender::try_from(ssb).unwrap();
// Print
println!("{:#?}", ssb_render);