Move NeoChatConnection and NeoChatRoom to LibNeoChat

Move `NeoChatConnection` and `NeoChatRoom` to `LibNeoChat` along with any required dependencies.

src/libneochat/urlhelper.cpp

@@ -0,0 +1,33 @@
+// SPDX-FileCopyrightText: 2022 Nicolas Fella <nicolas.fella@gmx.de>
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "urlhelper.h"
+
+#include <QFile>
+#include <QtGlobal>
+
+#ifdef Q_OS_ANDROID
+#include <QDesktopServices>
+#else
+#include <KIO/OpenUrlJob>
+#endif
+
+// QDesktopServices::openUrl doesn't support XDG activation yet, OpenUrlJob does
+// On Android XDG activation is not relevant, so use QDesktopServices::openUrl to avoid the heavy KIO dependency
+void UrlHelper::openUrl(const QUrl &url)
+{
+#ifdef Q_OS_ANDROID
+    QDesktopServices::openUrl(url);
+#else
+    auto *job = new KIO::OpenUrlJob(url);
+    job->start();
+#endif
+}
+
+void UrlHelper::copyTo(const QUrl &origin, const QUrl &destination)
+{
+    QFile originFile(origin.toLocalFile());
+    originFile.copy(destination.toLocalFile());
+}
+
+#include "moc_urlhelper.cpp"