Feature/molaya-implementation-backend

[molayadev]

Backend Solution Test.

Please read the README file where I have put some design considerations.

Additionally:

• Dockerfile is working
• docker-compose was updated to add back-prod container
• mvn clean install will validate code coverage with jacoco 80%
• Spotless was added to align code format
• Using jdk21
• Integrated with openApi for client and rest adapters (guarantee code aligned contract first pattern)
• Security should be consider, I have not added any but MTLS is something to consider between microservices.
• Performance worked very well.
• Aceptance TDD was not done due to time constrains. (Using cucumber and BDD is a common pattern I use).

Anyway check README.

Frontend will be added later on (possibly will be in different PR, not decided yet).