Add --no-vd-system-decorations

Add an option to disable the following flag for virtual displays:

    DisplayManager.VIRTUAL_DISPLAY_FLAG_SHOULD_SHOW_SYSTEM_DECORATIONS

Some devices render a broken UI when this flag is enabled.

app/data/bash-completion/scrcpy

@@ -57,6 +57,7 @@ _scrcpy() {
         --no-mipmaps
         --no-mouse-hover
         --no-power-on
+        --no-vd-system-decorations
         --no-video
         --no-video-playback
         --orientation=