benchmark

Address warnings on NVIDIA nvc++ (#1573)

* Address warnings on NVIDIA nvc++

Types of warnings were being generated:
1. Deprecated warnings - solved by defining the relevant BENCHMARK_*
  macros for nvc++ and adding pragma suppress on a couple of .cc files
2. Setup/TearDown const vs non-const partial override - solved by
   adding non-const version
3. Static but not referenced - added diagnostic suppress for that file

* Modified manually to comply with CD/CI

* Revert partial override

* Suppress warnings from tests if compiler is NVHPC

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Co-authored-by: dominic <510002+dmah42@users.noreply.github.com>