Imports of package cover

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.
github.com/open-policy-agent/opa/topdownPackage topdown provides low-level query evaluation support.
mathPackage math provides basic constants and mathematical functions.
sortPackage sort provides primitives for sorting slices and user-defined collections.