refactor: hand clap's own structs to the commands

src/cli/mod.rs

@@ -1,9 +1,9 @@
 // build.rs reaches these definitions with include!, so nothing here may refer to
 // the rest of the crate: keep this tree to clap definitions only
-mod ahab;
-mod django;
-mod link;
-mod postgres;
+pub mod ahab;
+pub mod django;
+pub mod link;
+pub mod postgres;
 
 pub use ahab::{Ahab, Commands};
 pub use django::Django;