feat: 创建项目阶段与ui布局

nl-plugin/nl-plugin-pmm/src/main/java/org/nl/pmm/modular/project/service/impl/ProjectServiceImpl.java

@@ -163,6 +163,7 @@ public class ProjectServiceImpl extends ServiceImpl<ProjectMapper, Project> impl
                 for (StageDetail stageDetail : details) {
                     ProjectRequestVo.RequestDescription req2 = new ProjectRequestVo.RequestDescription();
                     BeanUtil.copyProperties(stageDetail, req2);
+                    req2.setDays(CommonTimeFormatUtil.calculateDaysBetween(req2.getStartTime(), req2.getEndTime()));
                     if (req.getDetailId().equals(req2.getParentDetailId())) {
                         if (ObjectUtil.isEmpty(req.getChildren())) {
                             req.setChildren(new ArrayList<>());