CORD-3028 simple example service

Change-Id: I48ed0e9af080fbfed50b5bd2a9790652d3c907d8
diff --git a/xos/synchronizer/model-deps b/xos/synchronizer/model-deps
new file mode 100644
index 0000000..0967ef4
--- /dev/null
+++ b/xos/synchronizer/model-deps
@@ -0,0 +1 @@
+{}