Vagrant environment for Windows users

[xverges]

Everything assumes bash and has only been tested on OSX. Won't work in Windows and I haven'r verified that it does on Linux

[xverges]

Making-of

• https://app.vagrantup.com/ubuntu/boxes/focal64 has Python 3.8 out of the box. Unfortunately, folder sharing did not work out of the box for me. Maybe I could have solved with the Guest Additions, but I don't like asking users to shave yaks or run into some licensing issue (VirtualBox Open Source Edition is under GPLv2 license, but the Guest Additons package is covered by a Personal Use or Evaluation license)
• https://app.vagrantup.com/hashicorp/boxes/bionic64 comes with Python 2.7 and Python 3.6, and was released in 2018. Its end of life is in 2018.