feat: add metadata validation and scan acceptance support

src/main/java/com/music/metadata/service/impl/ScanItemServiceImpl.java

@@ -0,0 +1,28 @@
+package com.music.metadata.service.impl;
+
+import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
+import com.music.metadata.infrastructure.entity.ScanItemEntity;
+import com.music.metadata.infrastructure.mapper.ScanItemMapper;
+import com.music.metadata.service.ScanItemService;
+import org.springframework.stereotype.Service;
+
+import java.util.List;
+
+@Service
+public class ScanItemServiceImpl extends ServiceImpl<ScanItemMapper, ScanItemEntity> implements ScanItemService {
+
+    @Override
+    public boolean create(ScanItemEntity entity) {
+        return this.save(entity);
+    }
+
+    @Override
+    public boolean update(ScanItemEntity entity) {
+        return this.updateById(entity);
+    }
+
+    @Override
+    public List<ScanItemEntity> findAll() {
+        return this.list();
+    }
+}