Configure Git client

[kral2]

Git client installation is handled by with homebrew using an ansible playbook.

Now, Git needs to be configured before first usage. At least user.name and user.email to not mess the log.

Some links to check:

• git-scm quickstart: https://git-scm.com/book/en/v2/Getting-Started-First-Time-Git-Setup
• github and credential caching : https://docs.github.com/en/get-started/getting-started-with-git/setting-your-username-in-git
• github and email: https://docs.github.com/en/account-and-profile/setting-up-and-managing-your-github-user-account/managing-email-preferences/setting-your-commit-email-address