add config (WIP)

src/lib.rs

@@ -2,6 +2,7 @@ mod action;
 pub mod args;
 mod backend;
 mod cmd;
+mod config;
 mod core;
 mod env;
 mod grouping;
@@ -9,6 +10,7 @@ mod path;
 mod search;
 mod ui;
 
+pub use crate::config::Config;
 pub use crate::core::Pacdef;
 pub use crate::grouping::Group;
 pub(crate) use crate::grouping::Package;