Adding agent-index (#189)

* Adding agent-index

* review changes

* review comments addressed

* minor fix

* fix CI failure

* review comments

* Fix agent index test and address review comments

* Build Fixes

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Co-authored-by: Benjamin Welton <bewelton@amd.com>

tests/rocprofv3/pc-sampling/host-trap/transpose-multiple-agents/input.yml

@@ -3,3 +3,4 @@ jobs:
     pc_sampling_unit: "time"
     pc_sampling_method: "host_trap"
     pc_sampling_interval: 1
+    agent-index: relative