添加链接失效反馈后端及数据库；登陆改为登录

bookshelfplus/src/main/java/plus/bookshelf/Service/Service/FailureFeedbackService.java

@@ -0,0 +1,14 @@
+package plus.bookshelf.Service.Service;
+
+import plus.bookshelf.Service.Model.FailureFeedbackModel;
+
+public interface FailureFeedbackService {
+
+    /**
+     * 添加反馈
+     *
+     * @param failureFeedbackModel
+     * @return
+     */
+    Boolean addFailureFeedback(FailureFeedbackModel failureFeedbackModel);
+}