feat: 비즈니스 핵심 기능 패키지 이동 application.service -> domain.service

BE/error/src/main/java/com/example/demo/schedule/domain/service/DomainService.java

@@ -0,0 +1,24 @@
+package com.example.demo.schedule.domain.service;
+
+import com.example.demo.schedule.application.model.ScheduleModel;
+import com.example.demo.schedule.application.model.converter.ScheduleEntityConverter;
+import com.example.demo.schedule.domain.ScheduleEntity;
+import com.example.demo.schedule.domain.ScheduleRepository;
+import lombok.RequiredArgsConstructor;
+import org.springframework.data.convert.EntityConverter;
+
+@RequiredArgsConstructor
+public class DomainService {
+
+
+    private final ScheduleEntityConverter entityConverter;
+    private final ScheduleRepository scheduleRepository;
+
+
+    private Long createSchedule(ScheduleModel model) {
+
+        ScheduleEntity entity = entityConverter.toEntity(model);
+        ScheduleEntity save = scheduleRepository.save(entity);
+        return save.getEventId();
+    }
+}