refactor: import timers, process, and Buffer from node: (#7157)

Co-authored-by: muchnameless <12682826+muchnameless@users.noreply.github.com>
Co-authored-by: Almeida <almeidx@pm.me>

src/sharding/Shard.js

@@ -2,6 +2,8 @@
 
 const EventEmitter = require('node:events');
 const path = require('node:path');
+const process = require('node:process');
+const { setTimeout } = require('node:timers');
 const { setTimeout: sleep } = require('node:timers/promises');
 const { Error } = require('../errors');
 const Util = require('../util/Util');

src/sharding/ShardClientUtil.js

@@ -1,5 +1,6 @@
 'use strict';
 
+const process = require('node:process');
 const { Error } = require('../errors');
 const { Events } = require('../util/Constants');
 const Util = require('../util/Util');

src/sharding/ShardingManager.js

@@ -3,6 +3,7 @@
 const EventEmitter = require('node:events');
 const fs = require('node:fs');
 const path = require('node:path');
+const process = require('node:process');
 const { setTimeout: sleep } = require('node:timers/promises');
 const { Collection } = require('@discordjs/collection');
 const Shard = require('./Shard');