interface ServeFileOptionsimport { type ServeFileOptions } from "https://deno.land/std@0.218.2/http/file_server.ts"; Interface for serveFile options. PropertiesoptionaletagAlgorithm: AlgorithmIdentifier = "SHA-256"The algorithm to use for generating the ETag. optionalfileInfo: Deno.FileInfoAn optional FileInfo object returned by Deno.stat. It is used for optimization purposes.