feat: Add custom instructions for quick refactor (#258)

* feat: Add custom commands to quick refactor

* doc: Update for quick refactor feature

widgets/AddCustomInstructionDialog.hpp

@@ -0,0 +1,52 @@
+/* 
+ * Copyright (C) 2024-2025 Petr Mironychev
+ *
+ * This file is part of QodeAssist.
+ *
+ * QodeAssist 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 3 of the License, or
+ * (at your option) any later version.
+ *
+ * QodeAssist 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 QodeAssist. If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include <QDialog>
+#include <QString>
+
+#include "CustomInstructionsManager.hpp"
+
+class QLineEdit;
+class QPlainTextEdit;
+
+namespace QodeAssist {
+
+class AddCustomInstructionDialog : public QDialog
+{
+    Q_OBJECT
+
+public:
+    explicit AddCustomInstructionDialog(QWidget *parent = nullptr);
+    explicit AddCustomInstructionDialog(const CustomInstruction &instruction, QWidget *parent = nullptr);
+    ~AddCustomInstructionDialog() override = default;
+
+    CustomInstruction getInstruction() const;
+
+private:
+    void setupUi();
+    
+    QLineEdit *m_nameEdit;
+    QPlainTextEdit *m_bodyEdit;
+    CustomInstruction m_instruction;
+};
+
+} // namespace QodeAssist
+