added express endpoints, a settings service and a media info service

src/scripts/mediaInfo.js

@@ -0,0 +1,25 @@
+const mediaInfo = {
+  title: "",
+  artist: "",
+  icon: "",
+};
+const mediaInfoModule = {
+  mediaInfo,
+};
+
+mediaInfoModule.update = function(arg) {
+  mediaInfo.title = propOrDefault(arg.title);
+  mediaInfo.artist = propOrDefault(arg.message);
+  mediaInfo.icon = propOrDefault(arg.icon);
+};
+
+/**
+ * Return the property or a default value
+ * @param {*} prop property to check
+ * @param {*} defaultValue defaults to ""
+ */
+function propOrDefault(prop, defaultValue = "") {
+  return prop ? prop : defaultValue;
+}
+
+module.exports = mediaInfoModule;