Huge cleanups and added open gl window

src/editor/models/includedfilesmodel.h

@@ -0,0 +1,19 @@
+#pragma once
+
+#include <QAbstractListModel>
+
+struct ProjectContainer;
+
+class IncludedFilesModel : public QAbstractListModel
+{
+    Q_OBJECT
+
+public:
+    explicit IncludedFilesModel(ProjectContainer &project, QObject *parent = nullptr);
+
+    int rowCount(const QModelIndex &parent) const override;
+    QVariant data(const QModelIndex &index, int role) const override;
+
+private:
+    ProjectContainer &m_project;
+};