Macros for CRCNT DDD

A bunch of macros to easily create boilerplate codes in DDD.

The basic codes will be generated by defining an entity metal.

#[allow(dead_code)]
#[derive(DomainEntity, DomainValues, DomainStore)]
#[domain_store(table_name = "t_rice_v1")]
struct __Rice__ {
  id:          String,
  name:        String,
  #[domain_values(skip)]
  create_time: CreateAt,
  #[domain_values(skip)]
  update_time: UpdateAt,
  #[domain_values(skip)]
  creator:     Creator,
  #[domain_values(skip)]
  updater:     Updater,
  #[domain_values(skip)]
  deleted:     Option<Deleted>,
}