Feat/setup jpa repositories

src/main/java/no/ntnu/idi/stud/savingsapp/repository/QuestionRepository.java

+package no.ntnu.idi.stud.savingsapp.repository;
+
+import no.ntnu.idi.stud.savingsapp.model.user.configuration.Question;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.stereotype.Repository;
+
+/**
+ * Repository interface for {@link Question} entities.
+ */
+@Repository
+public interface QuestionRepository extends JpaRepository<Question, Long> {
+
+}