ssd-mod-v1: ssd: Back to using server-side decoration

Anbox uses client-side decoration really badly. Some games don't have a
title bar and click misplaced. And because of the lack of some things like
_GTK_FRAME_EXTENTS in GTK+, the zoom area must be within the real window
range. This makes buttons that occupy the border of the window difficult
to click (Although a patch has made border smaller).
So, I forked Anbox and made it use server-side decoration again.
NOTE: You must use this fork with a customed Android image. (You can get source here: https://github.com/thdaemon/platform_manifests)