gui: add basic gui code.

Gui/Control/LogControl.h

@@ -0,0 +1,38 @@
+#ifndef LOGCONTROL_H
+#define LOGCONTROL_H
+
+#include <QBrush>
+#include <QStandardItemModel>
+#include <QWidget>
+
+namespace Ui {
+class LogPrint;
+}
+
+class LogPrint : public QWidget
+{
+    Q_OBJECT
+
+public:
+    explicit LogPrint(QWidget* parent = nullptr);
+    ~LogPrint();
+
+public:
+    void Info(const QString& message);
+    void Warn(const QString& message);
+    void Error(const QString& message);
+    void Debug(const QString& message);
+
+public:
+    std::string now_str();
+
+private:
+    void InitControl();
+    void Print(const QString& message, const QBrush& color);
+
+private:
+    Ui::LogPrint* ui;
+    QStandardItemModel* model_;
+};
+
+#endif   // LOGCONTROL_H