Integrate the necessary parts of the kypo2-training

Conditions of satisfaction:

• Integrate persistence layer
  • Add security-commons dependency
  • Create entities like definitions, instances, run, etc.
  • Create files for migrations
  • Configure the project to use Postgres database instead of H2.
  • Add JPA repositories.
• Integrate API layer
  • Create DTOs (create validation messages)
  • Copy the exceptions from the kypo2-training
• Integrate service and facade layer
  • Create bean mapping using mapstruct
  • Create security and transaction annotations
  • Create service classes
  • Create facade classes
• Integrate elastciserach audit service
• Integrate rest layer
  • Create REST controllers
  • Create custom exception handler and necessary classes
• Refactor, fix and complete the missing code.