[GRASS-git] [OSGeo/grass] 9ef596: Add pre-commit hook file (#2759)

[Nicklas Larsson]

  Branch: refs/heads/main
  Home:   https://github.com/OSGeo/grass
  Commit: 9ef59636c9feb8ebed22db915e2dacec609dea5a
      https://github.com/OSGeo/grass/commit/9ef59636c9feb8ebed22db915e2dacec609dea5a
  Author: Nicklas Larsson <n_larsson at yahoo.com>
  Date:   2023-01-23 (Mon, 23 Jan 2023)

  Changed paths:
    A .pre-commit-config.yaml

  Log Message:
  -----------
  Add pre-commit hook file (#2759)

Hooks added:
* black
* flake8
* clang-format
* add trailing-whitespace 
* end-of-file-fixer
* markdown linter