Implemented basic grid rendering of task strips

mainwindow.cpp

@@ -0,0 +1,11 @@
+#include "mainwindow.h"
+#include "ui_mainwindow.h"
+
+MainWindow::MainWindow(QWidget *parent) :
+    QMainWindow{parent},
+    m_ui{std::make_unique<Ui::MainWindow>()}
+{
+    m_ui->setupUi(this);
+}
+
+MainWindow::~MainWindow() = default;