Imports of package federation

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
crypto/tlsPackage tls partially implements TLS 1.2, as specified in RFC 5246, and TLS 1.3, as specified in RFC 8446.
crypto/x509Package x509 implements a subset of the X.509 standard.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/spiffe/go-spiffe/v2/bundle/spiffebundlePackage spiffebundle provides SPIFFE bundle related functionality.
github.com/spiffe/go-spiffe/v2/bundle/x509bundlePackage x509bundle provides X.509 bundle related functionality.
github.com/spiffe/go-spiffe/v2/logger
github.com/spiffe/go-spiffe/v2/spiffeid
github.com/spiffe/go-spiffe/v2/spiffetls/tlsconfig
github.com/zeebo/errsPackage errs provides a simple error package with stack traces.
net/httpPackage http provides HTTP client and server implementations.
timePackage time provides functionality for measuring and displaying time.