create spring data repositories

src/main/java/guru/springframework/repositories/CategoryRepository.java

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+package guru.springframework.repositories;
+
+import guru.springframework.domain.Category;
+import org.springframework.data.repository.CrudRepository;
+
+public interface CategoryRepository extends CrudRepository<Category, Long> {
+}

src/main/java/guru/springframework/repositories/RecipeRepository.java

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+package guru.springframework.repositories;
+
+import guru.springframework.domain.Recipe;
+import org.springframework.data.repository.CrudRepository;
+
+public interface RecipeRepository extends CrudRepository<Recipe, Long>{
+
+
+}

src/main/java/guru/springframework/repositories/UnitOfMeasureRepository.java

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+package guru.springframework.repositories;
+
+import guru.springframework.domain.UnitOfMeasure;
+import org.springframework.data.repository.CrudRepository;
+
+public interface UnitOfMeasureRepository extends CrudRepository<UnitOfMeasure, Long> {
+}