Expose getter to KConfigWatcher's config

Summary:
It can help save users having to member variables for the config and the
watcher.

Reviewers: broulik

Reviewed By: broulik

Subscribers: broulik, kde-frameworks-devel

Tags: #frameworks

Differential Revision: https://phabricator.kde.org/D25833

src/core/kconfigwatcher.cpp

@@ -92,6 +92,11 @@ KConfigWatcher::KConfigWatcher(const KSharedConfig::Ptr &config):
 
 KConfigWatcher::~KConfigWatcher() = default;
 
+KSharedConfig::Ptr KConfigWatcher::config() const
+{
+    return d->m_config;
+}
+
 void KConfigWatcher::onConfigChangeNotification(const QHash<QString, QByteArrayList> &changes)
 {
     //should we ever need it we can determine the file changed with  QDbusContext::message().path(), but it doesn't seem too useful

src/core/kconfigwatcher.h

@@ -51,6 +51,12 @@ public:
 
     ~KConfigWatcher() override;
 
+    /**
+     * Returns the config being watched
+     * @since 5.65
+     */
+    KSharedConfig::Ptr config() const;
+
 Q_SIGNALS:
     /**
      * Emitted when a config group has changed