Imports of package tracing

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/util/tracing/detect
go.opentelemetry.io/otel/attributePackage attribute provides key and value attributes.
go.opentelemetry.io/otel/tracePackage trace provides an implementation of the tracing part of the OpenTelemetry API.
osPackage os provides a platform-independent interface to operating system functionality.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.