Add set_app_id request to zcr_notification_surface_v1 interface.

This CL adds zcr_notification_surface_v1_set_app_id method.
The application id of notification surface is needed to distinguish
notification surface from ARC++ from surfaces from other exo clients.

This issue is tracked at crbug.com/829383 and crbug.com/834027

Bug: 79452093
Test: Manual testing on device. Inline reply works.
Change-Id: I1568944a1f7848a0886a028a540bb4b7dd811249