Forward declare more types

This requires including some of the moc files, as compiling the property
code needs the full types.

src/field.cpp

@@ -105,3 +105,5 @@ Qt::Alignment Field::textAlignment() const
     }
     return QGuiApplication::layoutDirection() == Qt::LeftToRight ? Qt::AlignLeft : Qt::AlignRight;
 }
+
+#include "moc_field.cpp"

src/pass.cpp

@@ -521,3 +521,5 @@ QVariantList Pass::barcodesVariant() const
 {
     return toVariantList(barcodes());
 }
+
+#include "moc_pass.cpp"

src/pass.h

@@ -23,17 +23,17 @@
 #include "kpkpass_export.h"
 #include "field.h"
 
-#include <QColor>
-#include <QDateTime>
 #include <QObject>
-#include <QVariant>
 #include <QVector>
 
 #include <memory>
 
 class QByteArray;
+class QColor;
+class QDateTime;
 class QString;
 class QUrl;
+class QVariant;
 
 namespace KPkPass {