start propagating errors

src/main.rs

@@ -1,4 +1,4 @@
-use anyhow::Result;
+use anyhow::{Context, Result};
 
 use pacdef::{args, Group, Pacdef};
 
@@ -6,6 +6,6 @@ fn main() -> Result<()> {
     let args = args::get_args();
     let groups = Group::load_from_dir();
     let pacdef = Pacdef::new(args, groups);
-    pacdef.run_action_from_arg();
+    pacdef.run_action_from_arg().context("running action")?;
     Ok(())
 }