Imports of package internal

PathSynopsis
bytesPackage bytes implements functions for the manipulation of byte slices.
github.com/cli/safeexecPackage safeexec provides alternatives for exec package functions to avoid accidentally executing binaries found in the current working directory on Windows.
github.com/gohugoio/hugo/common/hexec
github.com/gohugoio/hugo/markup/converter
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.