Feature request: Support --enable-pystats

[markshannon]

It is useful to be able to get stats from the various benchmark suites.
Currently that involves making a custom branch with stats enabled, and benchmarking that.
Since CPython's configure has a --enable-pystats it would be nice to be able to turn that on from the config file.

It would be great if the config.ini file had an option for stats, much as it already has options for debug, pgo and lto.

E.g.

# Turn on stats?
stats = False

[markshannon]

python/cpython#93843 will help us generate more meaningful stats for benchmarks.