Add sound support for desktop notifications in Tauri v2 (#2678)

* Add sound support for desktop notifications in Tauri v2

* ci

---------

Co-authored-by: Lucas Nogueira <lucas@tauri.app>

plugins/notification/guest-js/index.ts

@@ -71,7 +71,13 @@ interface Options {
    */
   groupSummary?: boolean
   /**
-   * The sound resource name. Only available on mobile.
+   * The sound resource name or file path for the notification.
+   *
+   * Platform specific behavior:
+   * - On macOS: use system sounds (e.g., "Ping", "Blow") or sound files in the app bundle
+   * - On Linux: use XDG theme sounds (e.g., "message-new-instant") or file paths
+   * - On Windows: use file paths to sound files (.wav format)
+   * - On Mobile: use resource names
    */
   sound?: string
   /**