Is your feature request related to a problem? Please describe.
currently the pre-commit checks are deployed for github PRs https://results.pre-commit.ci/repo/github/214485001
would be great to allow for the same checking locally via runtests.sh.

this also provides some new features in runtests.sh for style checks, for example 'pretty-format-json'

work in progress in PR #4292