Add pre-commit hook to add and update linting configuration

[yenaing-oo]

Notes

• The git configuration command to use this repo's git hooks can possibly be automated with Poetry by defining it as an entry script.

[yenaing-oo]

This is definitely much cleaner!

I tested it out, and there is a change and additional steps required to make it work:

• Change cat << EOF > .git/hooks/pre-commit to cat << 'EOF' > .git/hooks/pre-commit to interpret the REPO_ROOT variable when the hook is called, rather than when writing the content of the hook file.
• After installing:
  • set the permission on the installation shell script to be executable
  • set the permission of the generated .git/hooks/pre-commit hook to be executable

I think we can do away with the installation script and simply include the pre-commit hook with executable permissions and track that. Because git uses the hooks in .git/hooks by default, I found a way to configure git to use our custom git hooks instead, by calling:

git config core.hooksPath <custom_githooks_dir_name>

I've made these changes in my PR.

[yenaing-oo]

I believe the default behaviour of git config is local.

https://git-scm.com/docs/git-config#_description

When writing, the new value is written to the repository local configuration file by default, and options --system, --global, --worktree, --file can be used to tell the command to write to that location (you can say --local but that is the default).