packaging: add script to copy files required for packaging

Change-Id: I4e6443ca705686e2a6113e671468d3d2134d821e
diff --git a/ring.nsi b/ring.nsi
index 692ef79..a0d5861 100644
--- a/ring.nsi
+++ b/ring.nsi
@@ -141,6 +141,9 @@
         # Files added here should be removed by the uninstaller (see section "uninstall")
         file "Ring.exe"
         file "ring.ico"
+        file "qtwebengine_resources.pak"
+        file "QtWebEngineProcess.exe"
+        file "icudtl.dat"
         file *.dll
         setOutPath $INSTDIR\platforms
         file platforms/*