perf: skip RAW event allocation when no listeners registered

Add hasListeners() to EventEmitter and guard RawEvent creation behind
it, avoiding unnecessary object allocation on every incoming message.

Author: getCurrentThread

lib/src/main/java/com/github/getcurrentthread/soopapi/decoder/MessageDispatcher.java

@@ -37,9 +37,12 @@ public void dispatchMessage(String message) {
         messageProcessor.execute(
                 () -> {
                     try {
-                        eventEmitter.emit(
-                                ChatEvent.RAW,
-                                new RawEvent(ChatEvent.RAW, message, System.currentTimeMillis()));
+                        if (eventEmitter.hasListeners(ChatEvent.RAW)) {
+                            eventEmitter.emit(
+                                    ChatEvent.RAW,
+                                    new RawEvent(
+                                            ChatEvent.RAW, message, System.currentTimeMillis()));
+                        }
 
                         String[] parts = message.split(SOOPConstants.F);
                         if (parts.length < 2) {

lib/src/main/java/com/github/getcurrentthread/soopapi/event/EventEmitter.java

@@ -68,4 +68,9 @@ public void clear() {
     public void clear(ChatEvent event) {
         listeners.remove(event);
     }
+
+    public boolean hasListeners(ChatEvent event) {
+        List<EventListener<? extends BaseEvent>> list = listeners.get(event);
+        return list != null && !list.isEmpty();
+    }
 }