Revert "chore: remove useless exit codes and hooks"

This reverts commit 40ff3fd4bf.

src-tauri/src/lib.rs

@@ -134,6 +134,9 @@ pub fn run() {
         .expect("error while running tauri application");
 
     app.run(|app_handle, e| match e {
+        tauri::RunEvent::ExitRequested { api, .. } => {
+            api.prevent_exit();
+        }
         tauri::RunEvent::WindowEvent { label, event, .. } => {
             if label == "main" {
                 match event {