feat(downloads): Added manifest.json utility for persistent download progress

Signed-off-by: quexeky <git@quexeky.dev>

src-tauri/src/cleanup.rs

@@ -0,0 +1,18 @@
+use std::sync::Mutex;
+
+use log::info;
+use tauri::AppHandle;
+
+use crate::AppState;
+
+#[tauri::command]
+pub fn quit(app: tauri::AppHandle) {
+    cleanup_and_exit(&app);
+}
+
+
+pub fn cleanup_and_exit(app: &AppHandle, ) {
+    info!("exiting drop application...");
+
+    app.exit(0);
+}