Clean up pre-commit cache

[sadamov]

• Date you used copier PyPackage: 29.11.2022
• Copier version used, if any: 6.2.0
• Python version, if any: 3.10.6
• Operating System: Red Hat Enterprise Linux Server release 7.9 (Maipo) x86_64

Description

Running pre-commit run --all-files generates a substantial amount of files in ~/.cache/pre-commit. This can lead to disk space quota errors at CSCS, as /home is limited to 50GB per user. I think it would make sense to either automatically clean up this folder after a pre-commit or ask the user in the documentation to do so manually.

[sadamov]

Another option would be to create the pre-commit envs on /scratch/ by default. /home also has a limitation of 500k number of files.