Add minimal Qt Quick example

Include qt_qml_imports.json which preloads libquickwindowplugin.so

experimental/dynamic_quick/CMakeLists.txt

+project(dynamicquick)
+cmake_minimum_required(VERSION 3.19)
+
+find_package(Qt6 COMPONENTS Core Gui Quick)
+
+qt_standard_project_setup()
+
+qt_add_executable(dynamicquick
+    main.cpp
+)
+
+target_link_libraries(dynamicquick PUBLIC
+    Qt::Core
+    Qt::Gui
+    Qt::Quick
+)
+
+qt_add_resources(dynamicquick "qml"
+    PREFIX "/"
+    FILES
+        hello.qml
+)
+
+install(TARGETS dynamicquick
+    BUNDLE  DESTINATION .
+    RUNTIME DESTINATION .
+)
+
+qt_generate_deploy_app_script(
+    TARGET dynamicquick
+    OUTPUT_SCRIPT deploy_script
+    NO_UNSUPPORTED_PLATFORM_ERROR
+)
+install(SCRIPT ${deploy_script})
+
+# Copy plugin preload files to the build directory.
+configure_file(qt_plugins.json qt_plugins.json COPYONLY)
+configure_file(qt_qml_imports.json qt_qml_imports.json COPYONLY)
+configure_file(qt.conf qt.conf COPYONLY)

experimental/dynamic_quick/hello.qml

+import QtQuick
+import QtQuick.Window
+
+Window {
+    width: 640
+    height: 480
+    visible: true
+    
+    Text {
+        text: "Hello World from dynamically linked Qt Quick!"
+        font.pointSize: 12
+        anchors.verticalCenter: parent.verticalCenter
+    }
+}
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experimental/dynamic_quick/main.cpp

+#include <QtGui>
+#include <QtQml>
+
+int main(int argc, char *argv[])
+{
+    QGuiApplication app(argc, argv);
+    QQmlApplicationEngine engine("qrc:/hello.qml");
+    app.exec();
+}

experimental/dynamic_quick/qt.conf

+[Paths]
+Prefix = /qt

experimental/dynamic_quick/qt_plugins.json

+[
+  {
+    "source": "$QTDIR/plugins/platforms/libqwasm.so",
+    "destination": "/qt/plugins/platforms/libqwasm.so"
+  },
+  {
+    "source": "$QTDIR/plugins/imageformats/libqjpeg.so",
+    "destination": "/qt/plugins/imageformats/libqjpeg.so"
+  },
+  {
+    "source": "qt.conf",
+    "destination": "/qt.conf"
+  }
+]

experimental/dynamic_quick/qt_qml_imports.json

+[
+  {
+    "source": "$QTDIR/qml/QtQuick/Window/libquickwindowplugin.so",
+    "destination": "/qt/qml/QtQuick/Window/libquickwindowplugin.so"
+  },
+  {
+    "source": "$QTDIR/qml/QtQuick/Window/qmldir",
+    "destination": "/qt/qml/QtQuick/Window/qmldir"
+  }
+]
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