* Support Gateway Intents

Allows supplying gateway intents through DiscordSocketConfig which will be passed through the IDENTIFY payload, in order to choose what gateway events you want to receive.

* Fixing enum casing

* Feedback

* Updating comment for GuildSubscriptions

* Comment update

* Add event and method

* Simplify convert to IEmote

* Add Webhook API models, REST implementation, and Socket bridges.

* Remove token overrides from REST.

Leaving that as a Webhook package only feature.

* Add Webhook API models, REST implementation, and Socket bridges.

* Remove token overrides from REST.

Leaving that as a Webhook package only feature.

* Webhook core implementation.

* Webhook REST implementation.

* Webhook client implementation.

* Add channel bucket id.

this is all really broken