add pacdef clean

src/main.rs

@@ -4,7 +4,7 @@ use pacdef::{args, Group, Pacdef};
 
 fn main() -> Result<()> {
     let args = args::get_args();
-    let groups = Group::load_from_dir();
+    let groups = Group::load_from_dir()?;
     let pacdef = Pacdef::new(args, groups);
     pacdef.run_action_from_arg().context("running action")
 }