feat: Implement external job import functionality

- Add ExternalJobSourceAliasRequest class for managing source alias requests.
- Create ExternalUploadClient to interact with external Excel upload system.
- Introduce ExternalUploadFileMetadata to represent metadata of uploaded files.
- Define IExternalJobImportService interface for external job import operations.
- Update JobDataTrendServiceImpl to support dynamic source code filtering.
- Modify PublicJobFairMapper.xml to ensure proper query handling.
- Add unit tests for ExternalJobExcelParser and ExternalJobFingerprint.
- Create script for applying external job import migrations.
- Implement SQL migration for external job import, including new tables and columns.

ruoyi-bussiness/src/main/resources/mapper/rc/PublicJobFairMapper.xml

@@ -92,7 +92,7 @@
         <where>
             del_flag = '0'
             <if test="query.jobFairTitle != null and query.jobFairTitle != ''">
-                and job_fair_title like concat('%', #{query.jobFairTitle}, '%')
+                and job_fair_title like concat('%', cast(#{query.jobFairTitle, jdbcType=VARCHAR} as varchar), '%')
             </if>
             <if test="query.jobFairType != null and query.jobFairType != ''">
                 and job_fair_type = #{query.jobFairType}