feat:1.优化commonResult 2. 重新初始化数据库结构

src/main/java/com/guo/learningprogresstracker/controller/reportFragmentsController.java

@@ -28,7 +28,7 @@ public class reportFragmentsController {
      * @return
      */
     @PostMapping
-    public CommonResult createFragments(@Valid @RequestBody CreateFragmentsRequest request) throws NotFindEntitiesException {
+    public CommonResult<Void> createFragments(@Valid @RequestBody CreateFragmentsRequest request) throws NotFindEntitiesException {
         studyReportFragmentsServiceImpl.createFragments(request);
         return CommonResult.success();
     }