Build binaries with profile-guided optimization enabled

[fbac]

Motivation and Context
zetacored and zetaclientd could benefit from using profile-guided optimization.

By building the binaries with pgo enabled we can benefit from a 2-14% performance boost for "free", as the compiler will optimize the binaries based on previous data collected at runtime (inlining functions, etc).
This does not only apply to our code but also to the libraries used by the binary, as the data is gathered during runtime.

[lumtis]

I may understand we need profile file to provide when building the binary?

I think we already generated pprof in the past cc @CharlieMc0 @brewmaster012