implement frontend backend connection tournament creation

docker-compose.yaml

...rc/main/java/hdm/mi/sthbackend/SthBackendApplication.java

...ain/java/hdm/mi/sthbackend/controller/TestController.java

...va/hdm/mi/sthbackend/controller/TournamentController.java

.../main/java/hdm/mi/sthbackend/dto/CreateTournamentDTO.java

.../main/java/hdm/mi/sthbackend/mapper/ModelToDTOMapper.java

sth-backend/src/main/java/hdm/mi/sthbackend/model/Team.java

...end/src/main/java/hdm/mi/sthbackend/model/Tournament.java

...ain/java/hdm/mi/sthbackend/service/TournamentService.java

sth-backend/src/main/resources/application-dev.yaml

sth-backend/src/main/resources/application.yaml

...java/hdm/mi/sthbackend/dummyObjects/dummyTournaments.java

...ava/hdm/mi/sthbackend/serviceTests/CreateBracketTest.java

sth-backend/src/test/java/hdm/mi/sthbackend/t1.java

sth-frontend/.env

sth-frontend/src/App.jsx

sth-frontend/src/components/TournamentForm.jsx

sth-frontend/src/features/auth/components/loginForm.jsx

sth-frontend/src/features/tournament/components/Team.jsx

...end/src/features/tournament/services/tournamentService.js