src: add news and store channels, and missing guild props (#3168)

* src: Implement store and news channels!

* src: Remove code dupe

* src: Add missing guild properties

* docs: Add a small notice that the channel type may also change

* src: Remove re-creation of the MessageStore

* lint: Unused Import

* src: Requested changes for StoreChannels

* typings: Fix typings

* src: Moar guild updates

* src: Set maximumPresence to the data prop, the already existent one, or default to 5000

* typings: afkChannel is a VC

I keep confusing them, ffs

Co-Authored-By: vladfrangu <kingdgrizzle@gmail.com>

* docs: Document that maximumMembers and maximumPresences may be inaccurate before fetching

* src Appels requested changes

src/structures/TextChannel.js

@@ -139,7 +139,6 @@ class TextChannel extends GuildChannel {
   awaitMessages() {}
   bulkDelete() {}
   acknowledge() {}
-  _cacheMessage() {}
 }
 
 TextBasedChannel.applyToClass(TextChannel, true);