feat: 限制同标题进程单例运行；网页链接调用浏览器打开

使用 DApplication::setSingleInstance，使用 标题_uid 创建进程锁，单例运行时新进程自动退出，并拉起原有进程主窗口显示；重写 QWebEnginePage，createWindow 时若链接与原来不同，则调用浏览器打开

Log: 支持单例运行；支持浏览器打开外部链接；修复访问深度论坛默认语言错误问题

spark-webapp-runtime/webengineview.cpp

@@ -1,22 +1,20 @@
 #include "webengineview.h"
+//#include "webengineurlrequestinterceptor.h"
+
+#include <QWebEngineSettings>
+#include <QWebEngineProfile>
+#include <QLocale>
 
 WebEngineView::WebEngineView(QWidget *parent)
     : QWebEngineView(parent)
+//    , interceptor(new WebEngineUrlRequestInterceptor(this))
 {
-}
-
-QWebEngineView *WebEngineView::createWindow(QWebEnginePage::WebWindowType type)
-{
-    Q_UNUSED(type)
-
-    QWebEngineView *view = new QWebEngineView;
-    connect(view, &QWebEngineView::urlChanged, this, &WebEngineView::on_urlChanged);
-
-    return view;
-}
-
-void WebEngineView::on_urlChanged(QUrl url)
-{
-    setUrl(url);
-    sender()->deleteLater();
+    //    page()->profile()->setHttpUserAgent(page()->profile()->httpUserAgent() + " MediaFeature/prefers-color-scheme:dark");
+
+    connect(this, &WebEngineView::urlChanged, this, [=]() {
+        //        page()->setUrlRequestInterceptor(interceptor);
+        //        page()->settings()->setAttribute(QWebEngineSettings::WebAttribute::LocalContentCanAccessRemoteUrls, true);
+        page()->profile()->setHttpAcceptLanguage(QLocale::system().name());
+        //        qInfo() << "User Agent:" << page()->profile()->httpUserAgent();
+    });
 }