add example 'clog-demo' (currently only runs '01-demo.lisp'); tested on android

examples/clog-demo/qml/ext/Browser.qml

@@ -0,0 +1,32 @@
+import QtQuick 2.15
+import QtQuick.Controls 2.15
+import QtWebView 1.15
+
+Item {
+  WebView {
+    id: browser
+    objectName: "browser"
+    width: parent. width
+    height: parent.height - reload.height
+    visible: !busy.visible
+  }
+
+  Button {
+    id: reload
+    anchors.bottom: parent.bottom
+    text: "Reload"
+    onClicked: browser.reload()
+  }
+
+  Rectangle {
+    id: busy
+    objectName: "busy"
+    color: "white"
+    anchors.fill: parent
+
+    Image {
+      anchors.centerIn: parent
+      source: "../img/busy.png"
+    }
+  }
+}