feat: vote_update event (#2596)

* Merge branch 'add-polls' into polls-ext

* added listener to poll votes

* added isUnvote property

* added option for custom message secret

* usage example updated

* added logic for catching removed votes

* usage example updated

* fixed logic for poll vote events

* temp usage example

* No more `isCurrentState`

* messageSecret converted to array

Co-authored-by: tuyuribr <45042245+tuyuribr@users.noreply.github.com>

* docs updated

* we already have messageSecret in vote.parentMessage

* PollVote.selectedOptions changed to be similar to pollOptions

* docs fixed

* window.injectToFunction clarifications

* minor clarifications

* fix: typo

* style: fix broken link in readme file

---------

Co-authored-by: tuyuribr <45042245+tuyuribr@users.noreply.github.com>

src/structures/Message.js

@@ -295,6 +295,7 @@ class Message extends Base {
             this.allowMultipleAnswers = Boolean(!data.pollSelectableOptionsCount);
             this.pollInvalidated = data.pollInvalidated;
             this.isSentCagPollCreation = data.isSentCagPollCreation;
+            this.messageSecret = Object.keys(data.messageSecret).map((key) =>  data.messageSecret[key]);
         }
 
         return super._patch(data);