Imports of package config

PathSynopsis
github.com/moby/buildkit/util/resolver/config
github.com/pelletier/go-tomlPackage toml is a TOML parser and manipulation library.
github.com/pkg/errorsPackage errors provides simple error handling primitives.
ioPackage io provides basic interfaces to I/O primitives.
osPackage os provides a platform-independent interface to operating system functionality.
syscallPackage syscall contains an interface to the low-level operating system primitives.