Set alpha to wayland window by Application::New(..., OPAQUE or Transparent)
Set alpha to wayland window by Application::New(..., OPAQUE or Transparent)

  - Use ecore_wl_window_alpha_set()

Change-Id: Ie5e978c9c87f64f81b1c31250c43c4cb62184f8f

dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor,dalihub/dali-adaptor