Poll permissions, events, and other related changes

[valzargaming]

@see https://github.com/discord/discord-api-docs/pull/6746/files

[valzargaming]

I'm running out of time to be able to work on this, if someone can please finish this up.

[Log1x]

This should be about ready once discord-php/DiscordPHP-Http#28 is merged.

The only thing I was unsure of is the namespace for the poll create request part. I feel like it should still be named Poll so I put it in its own Request namespace similar to interactions.

Example usage:

use Discord\Builders\MessageBuilder;
use Discord\Parts\Channel\Poll\Poll;

$message = MessageBuilder::new();

$poll = new Poll($this->discord());

$poll = $poll
    ->setQuestion('What is your favorite color?')
    ->setAnswers(['Red', 'Green', 'Blue'])
    ->setDuration(1)
    ->setAllowMultiselect(true);

$message->setPoll($poll);

$channel->sendMessage($message);

$discord->on(Event::MESSAGE_POLL_VOTE_ADD, function (PollAnswer $answer, Discord $discord) {
    //
});

$discord->on(Event::MESSAGE_POLL_VOTE_REMOVE, function (PollAnswer $answer, Discord $discord) {
    //
});

[SQKo]

Many things need to be adjusted, and in my opinion there should be repository for poll, the way it works will be similar to Reaction repositories

[Log1x]

im not sure how to handle me_voted in this context.

[valzargaming]

The documentation for this is just "Whether the current user voted for this answer" so I think it's something the API endpoint fills in based on who requested the data. It's probably used for something in the normal user client. Because bots can't vote anyway this should always be false and can be ignored.

[valzargaming]

Codacy is just complaining about a variable named $id being too short and can be safely ignored