Added functionality to manage time lines, objects and rooms too

dialogs/timelinepropertiesdialog.cpp

@@ -0,0 +1,11 @@
+#include "timelinepropertiesdialog.h"
+#include "ui_timelinepropertiesdialog.h"
+
+TimeLinePropertiesDialog::TimeLinePropertiesDialog(TimeLine &timeLine, ProjectTreeModel &projectModel, QWidget *parent) :
+    QDialog{parent},
+    m_ui{std::make_unique<Ui::TimeLinePropertiesDialog>()}
+{
+    m_ui->setupUi(this);
+}
+
+TimeLinePropertiesDialog::~TimeLinePropertiesDialog() = default;