lxappearance: add build option for GTK3 version and dbus

Closes: #10093 [via git-merge-pr]

srcpkgs/lxappearance/template

@@ -3,9 +3,11 @@ pkgname=lxappearance
 version=0.6.3
 revision=1
 build_style=gnu-configure
-configure_args="--enable-dbus"
+build_options="gtk3 dbus"
+build_options_default="dbus"
+configure_args="$(vopt_enable dbus) $(vopt_enable gtk3)"
 hostmakedepends="pkg-config intltool"
-makedepends="gtk+-devel dbus-glib-devel"
+makedepends="$(vopt_if gtk3 gtk+3-devel gtk+-devel) $(vopt_if dbus dbus-glib-devel)"
 depends="desktop-file-utils"
 short_desc="LXDE Theme Switcher"
 homepage="http://lxde.org/"