Added pre-commit hooks

README.md

@@ -16,3 +16,19 @@ This app uses /l10n/ according to the official flutter
 We use [weblate](https://translate.codeberg.org/engage/outbag/) to manage translations.
 
 [![Translation status](https://translate.codeberg.org/widget/outbag/outbag-app/multi-auto.svg)](https://translate.codeberg.org/engage/outbag/)
+
+## Contributing
+To keep the code formatted properly, 
+we use git hooks to format files before committing.
+
+You can easily add git-hooks using the following command:
+``` sh
+git config core.hooksPath ./hooks
+```
+
+Afterwards the `pre-commit` hook will automatically be run,
+when you commit your changes:
+``` sh
+git add # some files
+git commit
+```

hooks/pre-commit

@@ -0,0 +1,4 @@
+git_dir=$(git rev-parse --git-dir)
+project_dir=$(dirname $git_dir)
+
+dart format $project_dir