gallerist

feat: update CarRepository methods to return List and Page types; enhance CarRepositoryTest with additional assertions for production year and currency type

feat: enhance Account and Car models with Field annotations for BigDecimal properties; add CarRepository method to find cars by production year; create CarRepositoryTest for repository functionality

feat: add integration tests for account repository using Testcontainers and refactor MongoDB configuration

feat: implement account management features with CRUD operations and add integration tests

test: add unit tests for RestCustomerControllerImpl with save and exception handling