Add ability to disable precompiled headers with CMake (#2727)

src/widgets/listview/GenericListItem.hpp

@@ -1,5 +1,10 @@
 #pragma once
 
+#include <QIcon>
+#include <QPainter>
+#include <QRect>
+#include <QVariant>
+
 namespace chatterino {
 
 class GenericListItem

src/widgets/listview/GenericListModel.hpp

@@ -1,5 +1,8 @@
 #include "widgets/listview/GenericListItem.hpp"
 
+#include <QAbstractListModel>
+#include <QWidget>
+
 namespace chatterino {
 
 class GenericListModel : public QAbstractListModel

src/widgets/listview/GenericListView.cpp

@@ -2,6 +2,8 @@
 #include "singletons/Theme.hpp"
 #include "widgets/listview/GenericListModel.hpp"
 
+#include <QKeyEvent>
+
 namespace chatterino {
 
 GenericListView::GenericListView()