Write stdout and stderr of run script to `run-environment`

The `run-environment` folder currently captures relevant settings and environment status under which a set of results was processed. e.g. the commit hash of the git repo (at build time), the `environment.yaml` of the conda environment (including library version numbers), and the computation profile (including `n_fft`, `frame_length` and `hop_length` settings).

This is designed to help reproduce results in later runs, or to understand where nay issues with the results may have come from.

To this end it might also be useful to write the stdout and stderr to this folder as text files. This will help later users understand what errors or issues might have occured during the actual run