Create OOP Dependency Injection (concrete classes)

[Logi13]

• [x] Exercise: https://github.com/boolean-uk/csharp-tdd-oop-concrete-dependency-injection
• [ ] Sequence: https://www.notion.so/boolean/C-OOP-Dependency-Injection-with-Concrete-Classes-4f650c795dce481c9633b4891d14dc96?pvs=4