Imports of package loader

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/bundlePackage bundle implements bundle loading.
github.com/open-policy-agent/opa/v1/loaderPackage loader contains utilities for loading files into OPA.
io/fsPackage fs defines basic interfaces to a file system.
osPackage os provides a platform-independent interface to operating system functionality.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.