Added a uploader.

debian/control

@@ -2,6 +2,7 @@ Source: lxqt-qtplugin
 Maintainer: LXQt Packaging Team <pkg-lxqt-devel@lists.alioth.debian.org>
 Uploaders: Alf Gaida <agaida@siduction.org>,
            ChangZhuo Chen (陳昌倬) <czchen@gmail.com>,
+           Yukiharu YABUKI <yyabuki@debian.org>
 Section: x11
 Priority: optional
 Build-Depends: debhelper (>= 9),