Affiliate 允许为不同的用户设置不同的affiliate

Stripe 添加优惠券删除接口；限制优惠券只能在订阅时使用

src/main/java/com/ai/da/service/AffiliateService.java

@@ -18,7 +18,9 @@ public interface AffiliateService extends IService<Affiliate> {
 
     double[] getPersonalMonthlyIncome(int year);
 
-    Boolean applicationApproval(Long id, Boolean isApproved);
+    Boolean applicationApproval(Long id, Boolean isApproved, Float commission);
+
+    void updateCommissionPercentage(Long id, Float commission);
 
     void updateAffiliateInfoWithPayment();