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/models/repositories/channel.ts

@@ -1,8 +1,8 @@
 import { EntityRepository, Repository } from 'typeorm';
-import { Channel } from '../entities/channel';
-import { SchemaType } from '@/misc/schema';
-import { DriveFiles, ChannelFollowings, NoteUnreads } from '..';
-import { User } from '../entities/user';
+import { Channel } from '../entities/channel.js';
+import { SchemaType } from '@/misc/schema.js';
+import { DriveFiles, ChannelFollowings, NoteUnreads } from '../index.js';
+import { User } from '../entities/user.js';
 
 export type PackedChannel = SchemaType<typeof packedChannelSchema>;