Merge branch '24-create-endpoint-for-user-registration' into 'main'

backend-services/user-service/.dockerignore

backend-services/user-service/.gitignore

backend-services/user-service/Dockerfile

backend-services/user-service/config.js

backend-services/user-service/controllers/appController.js

backend-services/user-service/database/conn.js

backend-services/user-service/middleware/auth.js

backend-services/user-service/model/User.model.js

backend-services/user-service/package-lock.json

backend-services/user-service/package.json

backend-services/user-service/router/route.js

backend-services/user-service/server.js

docker-compose.yml