feat: external collection package (#2934)

* Use external collection package

* Complete typings

* Document properly base collection class

* Add clone since sort is now in-place

* Update for latest changes to package

* Fix whitespace

* Update docs link

* Oops

* Update Collection.js

* Update index.d.ts

src/util/Util.js

@@ -432,7 +432,7 @@ class Util {
    * @returns {Collection}
    */
   static discordSort(collection) {
-    return collection.sort((a, b) =>
+    return collection.sorted((a, b) =>
       a.rawPosition - b.rawPosition ||
       parseInt(b.id.slice(0, -10)) - parseInt(a.id.slice(0, -10)) ||
       parseInt(b.id.slice(10)) - parseInt(a.id.slice(10))