feat: add rateLimit event (#447)

* fix(controllers): change return value of INTERACTION_CREATE event

* feat: add rateLimit event

Closes https://github.com/discordeno/discordeno/issues/349

* Revert "fix(controllers): change return value of INTERACTION_CREATE event"

This reverts commit 9bc52d2ebf.

* https://open.spotify.com/track/6fxVffaTuwjgEk5h9QyRjy

src/rest/request_manager.ts

@@ -423,5 +423,16 @@ function processHeaders(url: string, headers: Headers) {
     }
   }
 
+  if (ratelimited) {
+    eventHandlers.rateLimit?.({
+      remaining,
+      bucketID,
+      global,
+      resetTimestamp,
+      retryAfter,
+      url,
+    });
+  }
+
   return ratelimited ? bucketID : undefined;
 }