[Record] lombok use and principle, object conversion tool

Lombok related

1. [lombok use and principle]  https://juejin.im/post/5a6eceb8f265da3e467555fe
2. [lombok principle]  https://projectlombok.org/

Object Conversion Tool

1. [model folders]  http://modelmapper.org/
2. [mapstruct] https://mapstruct.org/