feat: indicate which mods start and cancel raids (#5563)

src/controllers/commands/builtin/twitch/Raid.cpp

@@ -152,9 +152,8 @@ QString startRaid(const CommandContext &ctx)
          channel{ctx.channel}](const HelixUser &targetUser) {
             getHelix()->startRaid(
                 twitchChannel->roomId(), targetUser.id,
-                [channel, targetUser] {
-                    channel->addSystemMessage(QString("You started to raid %1.")
-                                                  .arg(targetUser.displayName));
+                [] {
+                    // do nothing
                 },
                 [channel, targetUser](auto error, auto message) {
                     auto errorMessage = formatStartRaidError(error, message);
@@ -202,8 +201,8 @@ QString cancelRaid(const CommandContext &ctx)
 
     getHelix()->cancelRaid(
         ctx.twitchChannel->roomId(),
-        [channel{ctx.channel}] {
-            channel->addSystemMessage("You cancelled the raid.");
+        [] {
+            // do nothing
         },
         [channel{ctx.channel}](auto error, auto message) {
             auto errorMessage = formatCancelRaidError(error, message);