ENH: ExtensionWizard: Support layout with main CMakeLists in subdirectory
requested to merge github/fork/jcfr/teach-extension-wizard-to-support-CMakeLists-in-subdir into master
Created by: jcfr
This allows to contribute description file update for the CarreraSlice extension.
In that particular case, the top-level CMakeLists.txt doesn't contain all variables of the form EXTENSION_*, instead they are found in src/CMakeLists.txt.