Add opt-in KSwitcher LAN discovery and mutual code pairing preview

src/configuration.cpp

@@ -40,6 +40,13 @@ LRESULT configurationRequest(App &app, HWND sender, const COPYDATASTRUCT &messag
     {
         switch (message.dwData)
         {
+        case ConfigLan:
+        {
+            if (!message.cbData || message.cbData > 4096) throw std::runtime_error("Invalid LAN request.");
+            auto first = static_cast<const unsigned char *>(message.lpData);
+            reply = app.lanCommand(Bytes(first, first + message.cbData));
+            break;
+        }
         case ConfigSyncConflicts:
             reply = app.syncConflictData();
             break;