Infrastructure for second edition

[jeroenjanssens]

• [x] Create a release for the first edition
• [x] Move tools to jeroenjanssens/dsutils b7e986dac3dae9fa225e19ff1cca356d59004905
• [x] Implement new directory structure c166432221552906f2b02a341dee4216508b586a
• [x] Update LICENSE to CC-BY-ND 444ce60aee45e024114caf3fe6f20ad650d1c8af
• [x] Copy files from 1e to 2e 4487dc51b5d5298a7e7f25b135701cdee0fb0312
• [x] Create new homepage (using Hugo) d568ff139ef7232216aa7e60db903825d3a76a68
• [x] Create Makefile to build and deploy locally ca5dabdf960340728a399af4c645adec1e0afc1e
• [ ] Set up GitHub Actions to build and deploy
• [ ] Create script that converts Markdown to Asciidoc