Imports of stringsvc4 command

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
encoding/jsonPackage json implements encoding and decoding of JSON as defined in RFC 7159.
errorsPackage errors implements functions to manipulate errors.
flagPackage flag implements command-line flag parsing.
github.com/go-kit/kit/endpointPackage endpoint defines an abstraction for RPCs.
github.com/go-kit/kit/transport/httpPackage http provides a general purpose HTTP binding for endpoints.
github.com/go-kit/kit/transport/natsPackage nats provides a NATS transport.
github.com/nats-io/go-natsA Go client for the NATS messaging system (https://nats.io).
logPackage log implements a simple logging package.
net/httpPackage http provides HTTP client and server implementations.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.