Add a K2V client library and CLI (#303)

lib.rs could use getting split in modules, but I'm not sure how exactly

Co-authored-by: trinity-1686a <trinity@deuxfleurs.fr>
Reviewed-on: https://git.deuxfleurs.fr/Deuxfleurs/garage/pulls/303
Co-authored-by: trinity-1686a <trinity.pointard@gmail.com>
Co-committed-by: trinity-1686a <trinity.pointard@gmail.com>

src/util/lib.rs

@@ -8,6 +8,7 @@ pub mod config;
 pub mod crdt;
 pub mod data;
 pub mod error;
+pub mod formater;
 pub mod metrics;
 pub mod persister;
 pub mod sled_counter;