wip: use shared stuff from pimalaya-tui

src/lib.rs

@@ -1,15 +1,10 @@
 pub mod account;
-pub mod backend;
-pub mod cache;
 pub mod cli;
 pub mod completion;
 pub mod config;
 pub mod email;
 pub mod folder;
 pub mod manual;
-pub mod output;
-pub mod printer;
-pub mod ui;
 
 #[doc(inline)]
 pub use crate::email::{envelope, flag, message};