chore: import upstream snapshot with attribution

defaultmodules/helloworld/helloworld.js

@@ -0,0 +1,14 @@
+Module.register("helloworld", {
+	// Default module config.
+	defaults: {
+		text: "Hello World!"
+	},
+
+	getTemplate () {
+		return "helloworld.njk";
+	},
+
+	getTemplateData () {
+		return this.config;
+	}
+});