increase outgoing message queue size to 1000

the current limit of 100 was arbitrary anyway,
and at a season's end we do send out more than 100 messages

TPP.Core/Chat/TwitchChatQueue.cs

@@ -44,7 +44,7 @@ public TwitchChatQueue(
             ILogger<TwitchChatQueue> logger,
             string senderUserId,
             TwitchApi twitchApi,
-            int maxQueueLength = 100,
+            int maxQueueLength = 1000,
             Duration? sleepDuration = null)
         {
             _logger = logger;