Add a BUILD_COOKBOOK cmake option to control cookbook build targets
Rationale
In develop branch BUILD_DOCUMENTATION cmake option control the configuration of both Doxygen and Cookbook.
"BUILD_DOCUMENTATION: Build the documentation (Doxygen)." -> Define in an official cmake module (file /usr/share/cmake-3.10/Modules/Documentation.cmake on my system)
Don't think that it is a good idea to use BUILD_DOCUMENTATION to also build to cookbook (different dependencies, different targets)
I've added an advanced option BUILD_COOKBOOOK (off by default) to control the cookbook configuration process.
Should be done also for the software guide to have a similar build process for all the documentation.
Implementation Details
Additional notes
Copyright
The copyright owner is COPYRIGHT OWNER (OR OWNER'S AGENT) and has signed the ORFEO ToolBox Contributor License Agreement.
Check before merging:
All discussions are resolved
At least 2 votes from core developers, no vote.
The feature branch is (reasonably) up-to-date with the base branch
Dashboard is green
Copyright owner has signed the ORFEO ToolBox Contributor License Agreement
