Store text output from ASV

[ev-br]

Text output is currently hidden in the Actions tab --- click Actions, click on a benchmark run, expand the "Run benchmarks" part, scroll down to the output.

There is a time limit on how long the logs are stored by github, so do we want to save them somewhere?

Note that all benchmark results from all runs are stored in the results/machine-name/commit-hash.json files in the gh-pages branch, so they are not lost either way.

[martin-frbg]

If all the relevant benchmark data ends up in the gh-pages branch , there is probably no need to archive the full logs ?

[ev-br]

Indeed they are, and here's a quick-and-dirty example of reading them in: https://github.com/OpenMathLib/BLAS-Benchmarks/blob/main/analyze.results.example.ipynb