Add includes so Chatterino compiles without PCH (#3308)

src/widgets/AttachedWindow.cpp

@@ -1,13 +1,15 @@
 #include "AttachedWindow.hpp"
 
 #include "Application.hpp"
+#include "ForwardDecl.hpp"
+#include "common/QLogging.hpp"
 #include "singletons/Settings.hpp"
 #include "util/DebugCount.hpp"
 #include "widgets/splits/Split.hpp"
 
 #include <QTimer>
 #include <QVBoxLayout>
-#include "common/QLogging.hpp"
+#include <memory>
 
 #ifdef USEWINSDK
 #    include "util/WindowsHelper.hpp"

src/widgets/AttachedWindow.hpp

@@ -1,7 +1,10 @@
 #pragma once
 
+#include "ForwardDecl.hpp"
+
 #include <QTimer>
 #include <QWidget>
+#include <memory>
 
 namespace chatterino {
 

src/widgets/dialogs/BadgePickerDialog.hpp

@@ -5,6 +5,7 @@
 #include <QComboBox>
 #include <QDialog>
 #include <boost/optional.hpp>
+#include <memory>
 
 namespace chatterino {
 

src/widgets/listview/GenericListModel.hpp

@@ -2,6 +2,7 @@
 
 #include <QAbstractListModel>
 #include <QWidget>
+#include <memory>
 
 namespace chatterino {