Add AllMarkSeen Functionality to Notification System

- Introduced the AllMarkSeen method in the notification service to mark all notifications as seen for a user, enhancing user experience by allowing bulk actions on notifications.
- Implemented the PublicAllMarkSeen handler to handle HTTP requests for marking all notifications as seen, ensuring proper request validation and response handling.
- Updated the notification client and SDK to support the new AllMarkSeen functionality, improving the overall API capabilities.
- Enhanced API documentation with Swagger comments for the new endpoint, ensuring clarity for API consumers.

internal/notification/handler.go

@@ -295,6 +295,33 @@ func (h *NotificationHandler) PublicMarkSeen(c echo.Context) error {
 	return response.Success(c, nil, "Notification marked as seen successfully")
 }
 
+// AllMarkSeen marks all notifications as seen for a user
+// @Summary Mark all notifications as seen for a user
+// @Description Mark all notifications as seen for a user
+// @Tags Notification
+// @Accept json
+// @Produce json
+// @Param user_id path string true "User ID"
+// @Success 200 {object} response.APIResponse
+// @Failure 400 {object} response.APIResponse
+// @Failure 500 {object} response.APIResponse
+// @Security BearerAuth
+// @Router /api/v1/notifications/all-seen/{user_id} [get]
+func (h *NotificationHandler) PublicAllMarkSeen(c echo.Context) error {
+	userID, err := customer.GetCustomerIDFromContext(c)
+	if err != nil {
+		return response.BadRequest(c, "user ID is required", "User ID must be provided")
+	}
+
+	// Mark all notifications as seen
+	err = h.service.AllMarkSeen(c.Request().Context(), userID)
+	if err != nil {
+		return response.InternalServerError(c, "Failed to mark all notifications as seen")
+	}
+
+	return response.Success(c, nil, "All notifications marked as seen successfully")
+}
+
 // ViewNotification gets a single notification by ID
 // @Summary Get notification details
 // @Description Get detailed information about a specific notification