Use same UI for appearance page and wizard

Signed-off-by: TheKodeToad <TheKodeToad@proton.me>

launcher/ui/widgets/AppearanceWidget.h

@@ -0,0 +1,61 @@
+// SPDX-License-Identifier: GPL-3.0-only
+/*
+ *  Prism Launcher - Minecraft Launcher
+ *  Copyright (C) 2025 TheKodeToad <TheKodeToad@proton.me>
+ *  Copyright (C) 2022 Tayou <git@tayou.org>
+ *
+ *  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 <QDialog>
+#include <memory>
+
+#include <Application.h>
+#include <translations/TranslationsModel.h>
+#include "java/JavaChecker.h"
+#include "ui/pages/BasePage.h"
+
+class QTextCharFormat;
+class SettingsObject;
+
+namespace Ui {
+class AppearanceWidget;
+}
+
+class AppearanceWidget : public QWidget {
+    Q_OBJECT
+
+   public:
+    explicit AppearanceWidget(bool simple, QWidget* parent = 0);
+    virtual ~AppearanceWidget();
+
+   public:
+    void applySettings();
+    void loadSettings();
+    void retranslateUi();
+
+   private:
+    void applyIconTheme(int index);
+    void applyWidgetTheme(int index);
+    void applyCatTheme(int index);
+    void loadThemeSettings();
+
+    void updateConsolePreview();
+    void updateCatPreview();
+
+    Ui::AppearanceWidget* m_ui;
+    QTextCharFormat* m_defaultFormat;
+    bool m_themesOnly;
+};