feat: Implement job fair company registration review workflow

- Added review status fields to the public_job_fair_company table to manage company registration states (pending, approved, rejected).
- Enhanced PublicJobFairServiceImpl to handle company registration, review, and job management for companies.
- Updated PublicJobFairMapper.xml with new SQL queries for managing company relations and reviews.
- Created migration script to add review fields and set default values for existing records.
- Introduced new permissions for company users to manage job postings and registration status.
- Added utility methods for ensuring proper role checks and company retrieval.

sql/public_job_fair.sql

@@ -60,10 +60,18 @@ CREATE TABLE "public_job_fair_company" (
     "create_time" TIMESTAMP,
     "update_by" VARCHAR(64),
     "update_time" TIMESTAMP,
-    "del_flag" CHAR(1) DEFAULT '0'
+    "del_flag" CHAR(1) DEFAULT '0',
+    "review_status" CHAR(1) DEFAULT '1',
+    "review_by" VARCHAR(64),
+    "review_time" TIMESTAMP,
+    "review_remark" VARCHAR(500)
 );
 
 COMMENT ON TABLE "public_job_fair_company" IS '招聘会-企业关联表';
+COMMENT ON COLUMN "public_job_fair_company"."review_status" IS '审核状态 0待审核 1通过 2驳回';
+COMMENT ON COLUMN "public_job_fair_company"."review_by" IS '审核人';
+COMMENT ON COLUMN "public_job_fair_company"."review_time" IS '审核时间';
+COMMENT ON COLUMN "public_job_fair_company"."review_remark" IS '审核意见';
 
 -- 招聘会-岗位关联表
 CREATE TABLE "public_job_fair_job" (