started trackview widgets for timeline view

app/widget/timelinewidget/trackview/trackview.cpp

@@ -0,0 +1,29 @@
+#include "trackview.h"
+
+#include <QSplitter>
+#include <QVBoxLayout>
+
+TrackView::TrackView(QWidget *parent) :
+  QWidget(parent)
+{
+  QVBoxLayout* layout = new QVBoxLayout(this);
+  layout->setSpacing(0);
+  layout->setMargin(0);
+
+  QSplitter* splitter = new QSplitter(Qt::Vertical);
+  splitter->setChildrenCollapsible(false);
+  splitter->setHandleWidth(1);
+  layout->addWidget(splitter);
+
+  QWidget* test1 = new QWidget();
+  test1->setStyleSheet("background: red;");
+  splitter->addWidget(test1);
+
+  QWidget* test3 = new QWidget();
+  test3->setStyleSheet("background: yellow;");
+  splitter->addWidget(test3);
+
+  QWidget* test2 = new QWidget();
+  test2->setStyleSheet("background: blue;");
+  splitter->addWidget(test2);
+}