Imports of pack command

PathSynopsis
cmd/internal/archivePackage archive implements reading of archive files generated by the Go toolchain.
cmd/internal/telemetry/counter
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
ioPackage io provides basic interfaces to I/O primitives.
io/fsPackage fs defines basic interfaces to a file system.
logPackage log implements a simple logging package.
osPackage os provides a platform-independent interface to operating system functionality.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.