feat: Add Cross-Domain Job Fair and Alliance City Management

- Implemented AppOutdoorFairController for outdoor job fair public H5 interfaces.
- Created CrossCityAllianceController for managing cross-domain alliance cities.
- Added CrossCityAlliance domain model and corresponding service and mapper.
- Developed CrossDomainJobVO for aggregating job data across job fairs.
- Created SQL scripts for initializing the cross-city alliance table and modifying the public job fair schema.
- Added migration script for backing up and restoring the HighGo database schema.

ruoyi-bussiness/src/main/java/com/ruoyi/cms/domain/Job.java

@@ -202,6 +202,19 @@ public class Job extends BaseEntity
 
     @ApiModelProperty("审核状态")
     private String reviewStatus;
+
+    @TableField(exist = false)
+    @ApiModelProperty("户外招聘会岗位审核状态")
+    private String fairReviewStatus;
+
+    @TableField(exist = false)
+    @ApiModelProperty("户外招聘会岗位审核备注")
+    private String fairReviewRemark;
+
+    @TableField(exist = false)
+    @ApiModelProperty("户外招聘会岗位审核时间")
+    private String fairReviewTime;
+
     //简历是否被查看
     @TableField(exist = false)
     private String isView;