Begin reimplement gex to use generated bindings and dbus xml

desktop-extensions/gnome/scripts/compile

@@ -0,0 +1,11 @@
+#!/bin/sh
+rm -rf _build
+mkdir -p _build/modules
+mkdir -p _build/bindings
+cp -r target/modules/*js _build/modules/
+cp -r target/bindings/*.js _build/bindings/
+cp -r metadata.json schemas target/*.js _build
+# cp -r icons resources *.css _build
+# cp src/prefs.ui _build/
+
+exit 0;