Imports of package repl

PathSynopsis
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/storagePackage storage exposes the policy engine's storage layer.
github.com/open-policy-agent/opa/v1/replPackage repl implements a Read-Eval-Print-Loop (REPL) for interacting with the policy engine.
ioPackage io provides basic interfaces to I/O primitives.