Do not include the whole QtDBus module

See https://www.kdab.com/beware-of-qt-module-wide-includes/

kate/kateapp.cpp

@@ -29,9 +29,14 @@
 
 #include <QApplication>
 #include <QCommandLineParser>
+#include <QDBusConnection>
 #include <QFileInfo>
 #include <QFileOpenEvent>
+#include <QJsonArray>
+#include <QJsonDocument>
+#include <QLoggingCategory>
 #include <QTextCodec>
+#include <QUrlQuery>
 
 #include <urlinfo.h>
 

kate/kateappadaptor.h

@@ -8,7 +8,7 @@
 #ifndef _kateapp_adaptor_h_
 #define _kateapp_adaptor_h_
 
-#include <QtDBus>
+#include <QDBusAbstractAdaptor>
 
 class KateApp;
 

kate/quickopen/katequickopenmodel.cpp

@@ -14,6 +14,7 @@
 #include <ktexteditor/document.h>
 #include <ktexteditor/view.h>
 
+#include <QFileInfo>
 #include <QMimeDatabase>
 
 KateQuickOpenModel::KateQuickOpenModel(KateMainWindow *mainWindow, QObject *parent)

kate/session/katesessionmanagedialog.cpp

@@ -18,7 +18,9 @@
 #include <KSharedConfig>
 #include <KStandardGuiItem>
 
+#include <QDBusReply>
 #include <QInputDialog>
+#include <QTimer>
 
 KateSessionManageDialog::KateSessionManageDialog(QWidget *parent)
     : QDialog(parent)

kate/session/katesessionmanager.cpp

@@ -25,6 +25,8 @@
 
 #include <QApplication>
 #include <QCryptographicHash>
+#include <QDBusReply>
+#include <QDBusConnectionInterface>
 #include <QDir>
 #include <QInputDialog>
 #include <QScopedPointer>