Renamed views_qtwidgets/ into qtwidgets/views/

As there will be some files that are specific to QtWidgets and
but aren't views

src/qtwidgets/views/ViewWrapper_qtwidgets.h

@@ -0,0 +1,58 @@
+/*
+  This file is part of KDDockWidgets.
+
+  SPDX-FileCopyrightText: 2020-2022 Klarälvdalens Datakonsult AB, a KDAB Group
+  company <info@kdab.com> Author: Sérgio Martins <sergio.martins@kdab.com>
+
+  SPDX-License-Identifier: GPL-2.0-only OR GPL-3.0-only
+
+  Contact KDAB at <info@kdab.com> for commercial licensing options.
+*/
+
+#pragma once
+
+#include "ViewWrapper.h"
+
+#include <QWidget>
+
+namespace KDDockWidgets::Views {
+
+/// @brief A View that doesn't own its QWidget
+/// Implements a View API around an existing QWidget
+/// Useful for widgets that are not created by KDDW.
+class DOCKS_EXPORT ViewWrapper_qtwidgets : public ViewWrapper
+{
+public:
+    explicit ViewWrapper_qtwidgets(QObject *widget);
+    explicit ViewWrapper_qtwidgets(QWidget *widget);
+
+    void setObjectName(const QString &name) override;
+    QRect geometry() const override;
+    void setGeometry(QRect) override;
+    void move(int x, int y) override;
+    void move(QPoint) override;
+    QPoint mapToGlobal(QPoint) const override;
+    QPoint mapFromGlobal(QPoint) const override;
+    QWindow *windowHandle() const override;
+    bool isTopLevel() const override;
+    bool isVisible() const override;
+    void setVisible(bool) override;
+    void activateWindow() override;
+    bool isMaximized() const override;
+    QSize maximumSize() const override;
+    void setSize(int width, int height) override;
+    bool is(Type) const override;
+    std::unique_ptr<ViewWrapper> window() const override;
+    std::unique_ptr<ViewWrapper> parentView() const override;
+    HANDLE handle() const override;
+    void grabMouse() override;
+    void releaseMouse() override;
+    QScreen *screen() const override;
+    void setFocus(Qt::FocusReason) override;
+    QString objectName() const override;
+
+private:
+    QWidget *const m_widget;
+};
+
+}