JavaScript: Add yet another API-graph test with re-exports.

javascript/ql/test/ApiGraphs/reexport/index.js

@@ -3,5 +3,6 @@ const impl = require("./lib/impl.js");
 module.exports = {
     impl,
     util: require("./lib/utils"),
-    other: require("./lib/stuff")
-};
+    other: require("./lib/stuff"),
+    util2: require("./lib/utils2")
+};

javascript/ql/test/ApiGraphs/reexport/lib/utils2.js

@@ -0,0 +1,5 @@
+module.exports = {
+    id: function id(x) { /* use (parameter 0 (member id (member util2 (member exports (module reexport)))) */
+	return x;
+    }
+};