Add table widget and item model for free terminal

WIP, the change made in the table widget can't be applied.

sources/TerminalStrip/ui/freeterminaleditor.h

@@ -0,0 +1,50 @@
+/*
+		Copyright 2006-2022 The QElectroTech Team
+		This file is part of QElectroTech.
+
+		QElectroTech is free software: you can redistribute it and/or modify
+		it under the terms of the GNU General Public License as published by
+		the Free Software Foundation, either version 2 of the License, or
+		(at your option) any later version.
+
+		QElectroTech is distributed in the hope that it will be useful,
+		but WITHOUT ANY WARRANTY; without even the implied warranty of
+		MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+		GNU General Public License for more details.
+
+		You should have received a copy of the GNU General Public License
+		along with QElectroTech.  If not, see <http://www.gnu.org/licenses/>.
+*/
+#ifndef FREETERMINALEDITOR_H
+#define FREETERMINALEDITOR_H
+
+#include <QWidget>
+
+class QETProject;
+class RealTerminal;
+class FreeTerminalModel;
+class QTableView;
+
+namespace Ui {
+	class FreeTerminalEditor;
+}
+
+class FreeTerminalEditor : public QWidget
+{
+		Q_OBJECT
+
+	public:
+		explicit FreeTerminalEditor(QETProject *project, QWidget *parent = nullptr);
+		~FreeTerminalEditor();
+
+		void reload();
+
+	private:
+		void selectionChanged();
+
+	private:
+		Ui::FreeTerminalEditor *ui;
+		QETProject *m_project = nullptr;
+		FreeTerminalModel *m_model = nullptr;
+};
+#endif // FREETERMINALEDITOR_H