[JPA] ModelMapper, Entity ↔ DTO 변환

디펜던시 추가

Gradle

implementation 'org.modelmapper:modelmapper:3.1.0'

Maven

<dependency>
  <groupId>org.modelmapper</groupId>
  <artifactId>modelmapper</artifactId>
  <version>2.4.0</version>
</dependency>

[Spring] JPA FindAll to convert DTO (ModelMapper)