Start work on generic protocol impl for #28 (#29)

Author: aramperes

rups/src/lib.rs

@@ -12,6 +12,12 @@ pub use var::*;
 
 /// Blocking client implementation for NUT.
 pub mod blocking;
+/// NUT protocol implementation (v1.2).
+///
+/// Reference: <https://networkupstools.org/docs/developer-guide.chunked/ar01s09.html>
+#[allow(dead_code)]
+#[macro_use]
+pub mod proto;
 /// Async client implementation for NUT, using Tokio.
 #[cfg(feature = "async")]
 pub mod tokio;