Imports of package gateway

PathSynopsis
contextPackage context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes.
github.com/moby/buildkit/client/buildid
github.com/moby/buildkit/frontend/gateway
github.com/moby/buildkit/frontend/gateway/pb
github.com/pkg/errorsPackage errors provides simple error handling primitives.
google.golang.org/grpcPackage grpc implements an RPC system called gRPC.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.
timePackage time provides functionality for measuring and displaying time.