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/antenna.ts

@@ -1,7 +1,7 @@
 import { EntityRepository, Repository } from 'typeorm';
-import { Antenna } from '../entities/antenna';
-import { SchemaType } from '@/misc/schema';
-import { AntennaNotes, UserGroupJoinings } from '..';
+import { Antenna } from '../entities/antenna.js';
+import { SchemaType } from '@/misc/schema.js';
+import { AntennaNotes, UserGroupJoinings } from '../index.js';
 
 export type PackedAntenna = SchemaType<typeof packedAntennaSchema>;