Imports of pprof command

PathSynopsis
cmd/internal/objfilePackage objfile implements portable access to OS-specific executable files.
crypto/tlsPackage tls partially implements TLS 1.2, as specified in RFC 5246, and TLS 1.3, as specified in RFC 8446.
debug/dwarfPackage dwarf provides access to DWARF debugging information loaded from executable files, as defined in the DWARF 2.0 Standard at http://dwarfstd.org/doc/dwarf-2.0.0.pdf.
fmtPackage fmt implements formatted I/O with functions analogous to C's printf and scanf.
github.com/google/pprof/driverPackage driver provides an external entry point to the pprof driver.
github.com/google/pprof/profilePackage profile provides a representation of profile.proto and methods to encode/decode profiles in this format.
io/ioutilPackage ioutil implements some I/O utility functions.
net/httpPackage http provides HTTP client and server implementations.
net/urlPackage url parses URLs and implements query escaping.
osPackage os provides a platform-independent interface to operating system functionality.
regexpPackage regexp implements regular expression search.
strconvPackage strconv implements conversions to and from string representations of basic data types.
stringsPackage strings implements simple functions to manipulate UTF-8 encoded strings.
syncPackage sync provides basic synchronization primitives such as mutual exclusion locks.
timePackage time provides functionality for measuring and displaying time.