[ADD] Course, CoureseInfoのサービスとそれを実装したクラスを作成しました。

src/main/java/com/example/demo/app/domain/service/CourseInfoService.java

@@ -0,0 +1,10 @@
+package com.example.demo.app.domain.service;
+
+import java.util.List;
+
+import com.example.demo.app.domain.model.CourseInfoModel;
+
+public interface CourseInfoService {
+
+	public List<CourseInfoModel> findAll();
+}

src/main/java/com/example/demo/app/domain/service/CourseService.java

@@ -0,0 +1,11 @@
+package com.example.demo.app.domain.service;
+
+import java.util.List;
+
+import com.example.demo.app.domain.model.CourseModel;
+
+public interface CourseService {
+	
+	public List<CourseModel> findAll();
+	
+}

src/main/java/com/example/demo/app/domain/service/impl/CourseInfoServiceImpl.java

@@ -0,0 +1,23 @@
+package com.example.demo.app.domain.service.impl;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.app.domain.model.CourseInfoModel;
+import com.example.demo.app.domain.service.CourseInfoService;
+import com.example.demo.app.infra.repository.AllocationRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class CourseInfoServiceImpl implements CourseInfoService {
+	
+	private final AllocationRepository allocationRepository;
+	
+	@Override
+	public List<CourseInfoModel> findAll() {
+		return allocationRepository.findAllJoinedAllocation();
+	}
+}

src/main/java/com/example/demo/app/domain/service/impl/CourseServiceImpl.java

@@ -0,0 +1,24 @@
+package com.example.demo.app.domain.service.impl;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.app.domain.model.CourseModel;
+import com.example.demo.app.domain.service.CourseService;
+import com.example.demo.app.infra.entity.CourseEntity;
+import com.example.demo.app.infra.repository.CourseRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class CourseServiceImpl implements CourseService {
+
+	private final CourseRepository courseRepository;
+	
+	public List<CourseModel> findAll(){
+		return CourseEntity.createCourseModelList(courseRepository.findAll());
+	}
+	
+}