Add these hooks to https://pre-commit.com/hooks.html

It would make sense to advertise these hooks to pre-commit users. This is possible on https://pre-commit.com/hooks.html. Though upstream seems to have some requirements to the hooks being added (based on https://github.com/pre-commit/pre-commit.com/pull/956)

Requirements:

• Contains a license (trivial to fix, and should be fixed for other reasons a well)
• Does not use language: system, script, docker, or docker_image
  • While the hooks themselves could trivially be migrated to language: python, the underlying debputy dependency is currently implicit and might be a bit harder to solve. Currently, the debputy dependency behaves like language: system.
• Does not contain "pre-commit" in the name
  • This one is a bit unclear since other third-party repos do use pre-commit in the repo name and title to some extent. Not sure if this is a historical allowance though.