Imports of package builder

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/spdx/tools-golang/spdxPackage spdx contains references to the latest spdx version
github.com/spdx/tools-golang/spdx/v2/common
github.com/spdx/tools-golang/utilsPackage utils contains various utility functions to support the main tools-golang packages.
path/filepathPackage filepath implements utility routines for manipulating filename paths in a way compatible with the target operating system-defined file paths.
timePackage time provides functionality for measuring and displaying time.