Forward action button to device

On click event, only the whole buttons state was passed to the device.
In addition, on ACTION_DOWN and ACTION_UP, pass the button associated to
the action.

Refs #3635 <https://github.com/Genymobile/scrcpy/issues/3635>

Co-authored-by: Romain Vimont <rom@rom1v.com>
Signed-off-by: Romain Vimont <rom@rom1v.com>

app/src/mouse_inject.c

@@ -93,6 +93,7 @@ sc_mouse_processor_process_mouse_click(struct sc_mouse_processor *mp,
             .pointer_id = event->pointer_id,
             .position = event->position,
             .pressure = event->action == SC_ACTION_DOWN ? 1.f : 0.f,
+            .action_button = convert_mouse_buttons(event->button),
             .buttons = convert_mouse_buttons(event->buttons_state),
         },
     };