CLOUD: Add Networking::Connection::isLimited()

`false` everywhere by default, but works on Android (`true` if not
Wi-Fi).

backends/networking/connection/islimited-default.cpp

@@ -0,0 +1,36 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+ *
+ */
+
+#include "backends/networking/connection/islimited.h"
+#include "common/textconsole.h"
+
+namespace Networking {
+namespace Connection {
+
+bool isLimited() {
+	warning("Networking::Connection::isLimited(): not limited by default");
+	return false;
+}
+
+} // End of namespace Connection
+} // End of namespace Networking
+