feat: Refactor user context handling and service methods

- Updated middleware to fetch user and tenant models by ID and set them in context.
- Refactored common service methods to accept userID as a parameter instead of extracting from context.
- Modified content service methods to include userID as a parameter for better clarity and performance.
- Adjusted coupon, creator, notification, order, tenant, user, and wallet services to utilize userID directly.
- Enhanced context key constants for improved readability and maintainability.

backend/app/http/v1/common.go

@@ -5,8 +5,10 @@ import (
 
 	"quyun/v2/app/http/v1/dto"
 	"quyun/v2/app/services"
+	"quyun/v2/pkg/consts"
 
 	"github.com/gofiber/fiber/v3"
+	"github.com/spf13/cast"
 )
 
 // @provider
@@ -30,5 +32,6 @@ func (c *Common) Upload(ctx fiber.Ctx, file *multipart.FileHeader, typeArg *stri
 	if typeArg != nil {
 		val = *typeArg
 	}
-	return services.Common.Upload(ctx, file, val)
+	uid := cast.ToInt64(ctx.Locals(consts.CtxKeyUser))
+	return services.Common.Upload(ctx.Context(), uid, file, val)
 }