types: define ApplicationCommand enums in lib (#5947)

typings/index.d.ts

@@ -7,6 +7,23 @@ declare enum ActivityTypes {
   COMPETING = 5,
 }
 
+declare enum ApplicationCommandOptionTypes {
+  SUB_COMMAND = 1,
+  SUB_COMMAND_GROUP = 2,
+  STRING = 3,
+  INTEGER = 4,
+  BOOLEAN = 5,
+  USER = 6,
+  CHANNEL = 7,
+  ROLE = 8,
+  MENTIONABLE = 9,
+}
+
+declare enum ApplicationCommandPermissionTypes {
+  ROLE = 1,
+  USER = 2,
+}
+
 declare enum ChannelType {
   text = 0,
   dm = 1,
@@ -150,8 +167,6 @@ declare module 'discord.js' {
     APIRole,
     APIUser,
     Snowflake as APISnowflake,
-    ApplicationCommandOptionType as ApplicationCommandOptionTypes,
-    ApplicationCommandPermissionType as ApplicationCommandPermissionTypes,
   } from 'discord-api-types/v8';
   import { EventEmitter } from 'events';
   import { PathLike } from 'fs';