feat(material): 新增材料相关接口

src/main/resources/template/service.java.ftl

@@ -0,0 +1,16 @@
+package ${package.Service};
+
+import ${package.Entity}.${entity};
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import ${superServiceClassPackage};
+import org.springframework.stereotype.Service;
+
+        <#if kotlin>
+class ${entity}Service : ${superServiceClass}<BaseMapper<${entity}>, ${entity}>
+        <#else>
+@Service
+public class ${entity}Service extends ${superServiceClass}<BaseMapper<${entity}>, ${entity}> {
+
+}
+</#if>
+