Add feedback when .wallop message is sent

This does the following:
- Opens a message-tab called "SUP" when a .wallop message is sent.
- Throws a validation error if another message is directly send into this "SUP" channel as another .wallop should be used.

src/blackcore/fsd/fsdclient.cpp

@@ -546,6 +546,14 @@ namespace BlackCore
             else { return; }
             const TextMessage textMessage(getOwnCallsignAsString(), receiver, message);
             sendQueudedMessage(textMessage);
+            if(receiver == QStringLiteral("*S"))
+            {
+                const CCallsign sender(getOwnCallsignAsString());
+                const CCallsign recipient(receiver);
+                CTextMessage t(message, sender, recipient);
+                t.markAsSent();
+                emit textMessageSent(t);
+            }
             increaseStatisticsValue(QStringLiteral("sendTextMessages"));
         }