Booklet (#362)

* Initial support for building a booklet

This is really WIP but add support in the makefile for building another
book from the same source.

As the target name suggests, it will be a TL;DR version of the
framework.

* Extract recipes in their own tex file (flat bread)

In order to reuse recipes in the booklet, we need to extract them in
their own tex file sourced by both.

* Add clean and quick targets for booklet

* Initial version of the booklet

Very very WIP, ugly as but need to start somewhere.

* Update the booklet

- Add pics
- Change layout

* Update makefile for booklet

- Add help target
- Follow naming conventions for target

* Remove non-wheat Bread

* Pack the picture together and fix captions

Takes less place, looks better, only good things...

* Remove labels

* Reorder figs and pics more logically

* Fix the fill-yourself baker math table

Much nicer and add rooms for comments

* Center pics and flowcharts and fix indentation

* Add booklet to all target

It will also be part of the release

* Reduce dependencies for booklet

not perfect but better, will avoid rebuild every tiem we work on the
text itself :)

* Add the booklet to the README

* Add docker entry, fix typo

* Add making sourdough starter

---------

Co-authored-by: Hendrik Kleinwaechter <hendrik.kleinwaechter@gmail.com>

README.md

@@ -84,6 +84,13 @@ size. This shrinks the book from more than 50MB down to ~5MB:
 
 * [Download compiled B&W .epub version](https://www.the-bread-code.io/bw-book.epub)
 
+If you prefer a very short version (about 10 pages) with main flowcharts and
+crucial informations needed while you are in the kitchen, we also provide a
+"too long;didn't read" version you could print.  Having read the full book is
+highly recommended to understand this leaflet:
+
+* [Download a condensed version](https://www.the-bread-code.io/booklet.pdf)
+
 ## Online HTML version
 
 Head over to [https://www.the-sourdough-framework.com](https://www.the-sourdough-framework.com)