feat: add pre-commit hook configuration

[adam-moss]

This adds support for using danger directly with .pre-commit-hooks.yaml configuration file widely used with the python (and other) ecosystems.

More info https://pre-commit.com

[orta]

Is this something that people would expect to find via searching through node_modules?

[adam-moss]

Is this something that people would expect to find via searching through node_modules?

No, in their repo the would define a .pre-commit-config.yaml file which would look something like:

Example .pre-commit-config.yaml

%YAML 1.2
# yaml-language-server: $schema=https://json.schemastore.org/pre-commit-config.json
---
default_install_hook_types:
  - pre-commit
  - prepare-commit-msg
  - commit-msg
  - post-commit
  - pre-push

default_stages:
  - pre-commit

fail_fast: true

repos:
  - repo: meta
    hooks:
      - id: check-hooks-apply
        stages:
          - manual
      - id: check-useless-excludes
        stages:
          - manual
      - id: identity
        stages:
          - manual

  - repo: https://github.com/danger/danger-js
    rev: v12.3.4
    hooks:
      - id: danger
        additional_dependencies:
          - "@gitlab/codeowners"

You can think of pre-commit as being similar to husky, widely used outside the node ecosystem.

[orta]

Eh, doesn't seem like too much faff for us, sure 👍🏻