initial implementation of custom keys

sources/awesome-widget/plugin/awkeycache.h

@@ -29,6 +29,7 @@ namespace AWKeyCache
 bool addKeyToCache(const QString &_type, const QString &_key = "");
 QStringList getRequiredKeys(const QStringList &_keys, const QStringList &_bars,
                             const QVariantMap &_tooltip,
+                            const QStringList &_userKeys,
                             const QStringList &_allKeys);
 QHash<QString, QStringList> loadKeysFromCache();
 };