Add tests to check VCN activity tracing in perfetto output (#75)
The test will run sampling on the example from the rocDecode repo:
https://github.com/ROCm/rocDecode/tree/develop/samples/videoDecodeBatch
Then, ensure that the Perfetto output captures VCN activity in the trace.
[ROCm/rocprofiler-systems commit: 6dd4938b3e]
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