eventpluginsmanager: relay `alternateDateReady` and `subLabelReady`

Two new signals are added in CalendarEventsPlugin, so we need to relay
them to make DaysModel receive them.

CCBUG: 429892

components/calendar/eventpluginsmanager.cpp

@@ -6,8 +6,6 @@
 
 #include "eventpluginsmanager.h"
 
-#include <CalendarEvents/CalendarEventsPlugin>
-
 #include <QAbstractListModel>
 #include <QCoreApplication>
 #include <QDebug>
@@ -258,6 +256,8 @@ void EventPluginsManager::loadPlugin(const QString &absolutePath)
             connect(eventsPlugin, &CalendarEvents::CalendarEventsPlugin::dataReady, this, &EventPluginsManager::dataReady);
             connect(eventsPlugin, &CalendarEvents::CalendarEventsPlugin::eventModified, this, &EventPluginsManager::eventModified);
             connect(eventsPlugin, &CalendarEvents::CalendarEventsPlugin::eventRemoved, this, &EventPluginsManager::eventRemoved);
+            connect(eventsPlugin, &CalendarEvents::CalendarEventsPlugin::alternateDateReady, this, &EventPluginsManager::alternateDateReady);
+            connect(eventsPlugin, &CalendarEvents::CalendarEventsPlugin::subLabelReady, this, &EventPluginsManager::subLabelReady);
         } else {
             // not our/valid plugin, so unload it
             loader.unload();

components/calendar/eventpluginsmanager.h

@@ -10,9 +10,10 @@
 #include <QObject>
 #include <QStringList>
 
+#include <CalendarEvents/CalendarEventsPlugin>
+
 namespace CalendarEvents
 {
-class CalendarEventsPlugin;
 class EventData;
 }
 class EventPluginsModel;
@@ -44,13 +45,27 @@ public:
 Q_SIGNALS:
     void pluginsChanged();
 
-    // These three signals below are used for relaying the
+    // These 5 signals below are used for relaying the
     // plugin signals so that the EventPluginsManager don't
     // have to worry about connecting to newly loaded plugins
     void dataReady(const QMultiHash<QDate, CalendarEvents::EventData> &data);
     void eventModified(const CalendarEvents::EventData &modifiedEvent);
     void eventRemoved(const QString &uid);
 
+    /**
+     * Relays the plugin signal that contains alternate dates
+     *
+     * @param data a hash from CalendarEventsPlugin
+     */
+    void alternateDateReady(const QHash<QDate, QDate> &data);
+
+    /**
+     * Relays the plugin signal that contains sub-labels
+     *
+     * @param data a hash from CalendarEventsPlugin
+     */
+    void subLabelReady(const QHash<QDate, CalendarEvents::CalendarEventsPlugin::SubLabel> &data);
+
 private:
     void loadPlugin(const QString &absolutePath);