refactor: move Guild#defaultRole to RoleStore#everyone (discordjs#3347)

* remove guild#defaultRole

* add RoleStore#defaultRole

* typings

* fix trailing space

* another one

* Rename it to everyone

src/stores/RoleStore.js

@@ -110,6 +110,15 @@ class RoleStore extends DataStore {
     });
   }
 
+  /**
+   * The `@everyone` role of the guild
+   * @type {?Role}
+   * @readonly
+   */
+  get everyone() {
+    return this.get(this.guild.id) || null;
+  }
+
   /**
    * The role with the highest position in the store
    * @type {Role}

src/structures/Guild.js

@@ -489,15 +489,6 @@ class Guild extends Base {
     return this.client.channels.get(this.embedChannelID) || null;
   }
 
-  /**
-   * The `@everyone` role of the guild
-   * @type {?Role}
-   * @readonly
-   */
-  get defaultRole() {
-    return this.roles.get(this.id) || null;
-  }
-
   /**
    * The client user as a GuildMember of this guild
    * @type {?GuildMember}

typings/index.d.ts

@@ -686,7 +686,6 @@ declare module 'discord.js' {
 		public readonly createdAt: Date;
 		public readonly createdTimestamp: number;
 		public defaultMessageNotifications: DefaultMessageNotifications | number;
-		public readonly defaultRole: Role | null;
 		public deleted: boolean;
 		public description: string | null;
 		public embedChannel: GuildChannel | null;
@@ -1795,6 +1794,7 @@ declare module 'discord.js' {
 
 	export class RoleStore extends DataStore<Snowflake, Role, typeof Role, RoleResolvable> {
 		constructor(guild: Guild, iterable?: Iterable<any>);
+		public readonly everyone: Role | null;
 		public readonly highest: Role;
 
 		public create(options?: { data?: RoleData, reason?: string }): Promise<Role>;