Add Zellij support

src/main.rs

@@ -61,6 +61,7 @@ fn main() -> Result<ExitCode> {
     let (mut app_state, state_file_status) = AppState::new(
         info_file.exercises,
         info_file.final_message.unwrap_or_default(),
+        args.zellij,
     )?;
 
     // Show the welcome message if the state file doesn't exist yet.