[ADD]QuestionRepositoryの作成

src/main/java/com/example/demo/app/infra/repository/QuestionRepository.java

@@ -0,0 +1,9 @@
+package com.example.demo.app.infra.repository;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+
+import com.example.demo.app.infra.entity.QuestionEntity;
+
+public interface QuestionRepository extends JpaRepository<QuestionEntity, Long> {
+
+}