interface BackgroundFillGradientimport { type BackgroundFillGradient } from "https://deno.land/x/grammy@v1.29.0/types.web.ts"; The background is a gradient fill. Propertiestype: "gradient"Type of the background fill, always “gradient” top_color: numberTop color of the gradient in the RGB24 format bottom_color: numberBottom color of the gradient in the RGB24 format rotation_angle: numberClockwise rotation angle of the background fill in degrees; 0-359