add theme setup wizard

Signed-off-by: Tayou <tayou@gmx.net>

launcher/ui/setupwizard/ThemeWizardPage.h

@@ -0,0 +1,44 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2022 Tayou <tayou@gmx.net>
+ *
+ *  This program 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, version 3.
+ *
+ *  This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+#pragma once
+
+#include <QWidget>
+#include "BaseWizardPage.h"
+
+namespace Ui {
+class ThemeWizardPage;
+}
+
+class ThemeWizardPage : public BaseWizardPage
+{
+    Q_OBJECT
+
+public:
+    explicit ThemeWizardPage(QWidget *parent = nullptr);
+    ~ThemeWizardPage();
+
+    void initializePage() override;
+    bool validatePage() override;
+    void retranslate() override;
+
+private slots:
+    void updateIcons();
+
+private:
+    Ui::ThemeWizardPage *ui;
+};