implement wtv-favorites with huge help from @JarHead4

zefie_wtvp_minisrv/ServiceVault/wtv-favorite/list-folders.js

@@ -0,0 +1,16 @@
+var minisrv_service_file = true;
+
+var favstore_exists = ssid_sessions[socket.ssid].favstore.favstoreExists();
+
+if (favstore_exists != true)
+{
+	ssid_sessions[socket.ssid].favstore.createFavstore();
+}
+
+var folder_array = ssid_sessions[socket.ssid].favstore.getFolders();
+var data = "";
+
+for (let i = 0; i < folder_array.length; i++) data += folder_array[i] + "\0";
+
+headers = `200 OK
+Content-type: text/plain`