aopt

Generate help message for aopt.

Example

```rust fn simplehelpgenerate(set: &dyn Set) -> AppHelp { let mut help = AppHelp::default();

help.set_name("snowball".into());

let global = help.store.get_global_mut();

for opt in set.opt_iter() {
    if opt.match_style(aopt::opt::Style::Pos) {
        global.add_pos(PosStore::new(
            opt.get_name(),
            opt.get_hint(),
            opt.get_help(),
            opt.get_index().unwrap().to_string().into(),
            opt.get_optional(),
        ));
    } else if !opt.match_style(aopt::opt::Style::Main) {
        global.add_opt(OptStore::new(
            opt.get_name(),
            opt.get_hint(),
            opt.get_help(),
            opt.get_type_name(),
            opt.get_optional(),
        ));
    }
}

global.set_header(gstr("Get the follow people number in https://xueqiu.com/"));
global.set_footer(gstr(&format!(
    "Create by araraloren {}",
    env!("CARGO_PKG_VERSION")
)));

help

} ```

LICENSE

MPL-2.0