Imports of package builtins

PathSynopsis
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/open-policy-agent/opa/astDeprecated: This package is intended for older projects transitioning from OPA v0.x and will remain for the lifetime of OPA v1.x, but its use is not recommended.
math/bigPackage big implements arbitrary-precision arithmetic (big numbers).
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.