A small unix and windows lib to search for executables in path folders.

Example: ```rs use searchpath::search_path; use std::ffi::OsString;

fn main() { let path = std::env::varos("PATH"); let files = searchpath("ba", path.asref().map(OsString::asos_str)); for file in files { println!("{}", file); } } Will print something like bat bashbug bash base32 basenc basename base64 ```