Add profile-guided optimization when building bin/poller

[cgrinds]

• Use CPU profile from sar on .74 since it collects: [Rest, RestPerf, Zapi, ZapiPerf] to build poller.
• Analyze the poller both with and without PGO from a Linux system. You will probably need to modify the poller so that it does the same number of polls from each collector and then exits) to get a valid before and after
• If the PGO build is faster, update CI to use it

Reference

• https://go.dev/doc/pgo
• https://go.dev/blog/pgo