cargo: set up as a lib

Cargo.toml

@@ -4,6 +4,10 @@ version = "0.1.0"
 authors = ["Dave Hrycyszyn <futurechimp@users.noreply.github.com>"]
 edition = "2018"
 
+[lib]
+name = "nym_client"
+path = "src/lib.rs"
+
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]

src/lib.rs

@@ -0,0 +1 @@
+pub mod clients;