유저(OneToMany)와 게시물(ManyToOne)의 관계 형성 해주기 user.entity.ts import { type } from 'os'; import { Board } from 'src/boards/board.entity'; import { BaseEntity, Column, Entity, OneToMany, PrimaryGeneratedColumn, Unique, } from 'typeorm'; @Entity() @Unique(['username']) export class User extends BaseEntity { @PrimaryGeneratedColumn() id: number; @Column() username: string; @Column() password: string; @On..