refactor: refactoring imports

将来ESMに移行しやすいように
Related: #7658

なんかmochaが起動しなくなってるけど理由不明
すぐ直したい

src/server/well-known.ts

@@ -1,11 +1,11 @@
 import * as Router from '@koa/router';
 
-import config from '@/config';
-import { parseAcct, Acct } from '@/misc/acct';
-import { links } from './nodeinfo';
-import { escapeAttribute, escapeValue } from '../prelude/xml';
-import { Users } from '../models';
-import { User } from '../models/entities/user';
+import config from '@/config/index.js';
+import { parseAcct, Acct } from '@/misc/acct.js';
+import { links } from './nodeinfo.js';
+import { escapeAttribute, escapeValue } from '../prelude/xml.js';
+import { Users } from '@/models/index.js';
+import { User } from '@/models/entities/user.js';
 
 // Init router
 const router = new Router();