refactor: Move TwitchBadges to Application (#5096)

* refactor: Move TwitchBadges to Application

* refactor: Use named initializers

* refactor: Use `empty()` instead of `size() > 0`

* refactor: use emplace instead of push into the callback queue

src/providers/twitch/TwitchMessageBuilder.cpp

@@ -163,7 +163,7 @@ namespace {
         }
 
         if (auto globalBadge =
-                TwitchBadges::instance()->badge(badge.key_, badge.value_))
+                getIApp()->getTwitchBadges()->badge(badge.key_, badge.value_))
         {
             return globalBadge;
         }