Imports of package parser2v3

PathSynopsis
errorsPackage errors implements functions to manipulate errors.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/spdx/gordf/rdfloader/parser
github.com/spdx/gordf/rdfwriter
github.com/spdx/gordf/uri
github.com/spdx/tools-golang/spdx/common
github.com/spdx/tools-golang/spdx/v2_3
strconvPackage strconv implements conversions to and from string representations of basic data types.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.