feat(iap/apple): 实现苹果IAP非续期订阅功能

新增苹果IAP相关接口与逻辑，包括产品列表查询、交易绑定、状态查询和恢复购买功能。移除旧的IAP验证逻辑，重构订阅系统以支持苹果IAP交易记录存储和权益计算。

- 新增/pkg/iap/apple包处理JWS解析和产品映射
- 实现GET /products、POST /attach、POST /restore和GET /status接口
- 新增apple_iap_transactions表存储交易记录
- 更新文档说明配置方式和接口规范
- 移除旧的AppleIAP验证和通知处理逻辑

internal/svc/serviceContext.go

@@ -27,6 +27,7 @@ import (
 	"github.com/perfect-panel/server/internal/model/ticket"
 	"github.com/perfect-panel/server/internal/model/traffic"
 	"github.com/perfect-panel/server/internal/model/user"
+	iapapple "github.com/perfect-panel/server/internal/model/iap/apple"
 	"github.com/perfect-panel/server/pkg/limit"
 	"github.com/perfect-panel/server/pkg/nodeMultiplier"
 	"github.com/perfect-panel/server/pkg/orm"
@@ -62,6 +63,7 @@ type ServiceContext struct {
 	SubscribeModel    subscribe.Model
 	TrafficLogModel   traffic.Model
 	AnnouncementModel announcement.Model
+	IAPAppleTransactionModel iapapple.Model
 
 	Restart               func() error
 	TelegramBot           *tgbotapi.BotAPI
@@ -117,6 +119,7 @@ func NewServiceContext(c config.Config) *ServiceContext {
 		TrafficLogModel:   traffic.NewModel(db),
 		AnnouncementModel: announcement.NewModel(db, rds),
 	}
+	srv.IAPAppleTransactionModel = iapapple.NewModel(db, rds)
 	srv.DeviceManager = NewDeviceManager(srv)
 	return srv