Merge pull request #1434 from sorairolake/add-sysexits

Add `sysexits`

README.md

@@ -1508,6 +1508,7 @@ See also [Are we game yet?](https://arewegameyet.rs)
 * [ardaku/whoami](https://github.com/ardaku/whoami) [[whoami](https://crates.io/crates/whoami)] — Rust crate to get the current user and environment. [![build badge](https://github.com/ardaku/whoami/actions/workflows/ci.yml/badge.svg?branch=stable)](https://github.com/ardaku/whoami/actions/workflows/ci.yml)
 * [GuillaumeGomez/sysinfo](https://github.com/GuillaumeGomez/sysinfo) [[sysinfo](https://crates.io/crates/sysinfo)] — Cross-platform library to fetch system information [![build badge](https://github.com/GuillaumeGomez/sysinfo/actions/workflows/CI.yml/badge.svg?branch=master)](https://github.com/GuillaumeGomez/sysinfo/actions/workflows/CI.yml)
 * [Phate6660/nixinfo](https://github.com/Phate6660/nixinfo) [[nixinfo](https://crates.io/crates/nixinfo)] — A lib crate for gathering system info such as cpu, distro, environment, kernel, etc.
+* [sorairolake/sysexits-rs](https://github.com/sorairolake/sysexits-rs) [[sysexits](https://crates.io/crates/sysexits)] — The system exit codes as defined by [`<sysexits.h>`](https://man.openbsd.org/sysexits). [![CI](https://github.com/sorairolake/sysexits-rs/workflows/CI/badge.svg?branch=develop)](https://github.com/sorairolake/sysexits-rs/actions?query=workflow%3ACI)
 
 ### Task scheduling