Add shared cache to pre-commit pipelines

[VannTen]

Is your feature request related to a problem? Please describe.
Context: thoth-station/prescriptions-refresh-job#52 (comment)
(and the preceding discussion).

TL;DR: pre-commit install environments for it's hooks in a cache and can reuse
them (if versions matches etc), which is a big win for performance. Link to
pre-commit docs

Describe the solution you'd like
Adding a persistent cache shared between all the runs of the pre-commit
pipeline + a periodic (infrequent, like monthly cache cleanup (pre-commit gc)

Additional context
Quick local measurement for a idea of the order of magnitude for the space needed:

$ du -h -d 0 ~/.cache/pre-commit
1.3G	/home/max/.cache/pre-commit

[VannTen]

/close