Packages refactor

...ni/pa165/car/rest/CarComponentPairControllerUnitTest.java

...st/java/cz/muni/pa165/car/rest/CarControllerUnitTest.java

.../muni/pa165/car/rest/CarDriverPairControllerUnitTest.java

...ntegration/CarComponentPairControllerIntegrationTest.java

.../car/service/CarComponentPairServiceIntegrationTests.java

...165/car/service/CarDriverPairServiceIntegrationTests.java

...cz/muni/pa165/car/service/CarServiceIntegrationTests.java

...i/pa165/car/service/unit/CarComponentPairServiceTest.java

...muni/pa165/car/service/unit/CarDriverPairServiceTest.java

...t/java/cz/muni/pa165/car/service/unit/CarServiceTest.java