Add ATLAS_ENABLE_IDE_HELPERS flag to all projects, only enable it for WorkDir
Add ATLAS_ENABLE_IDE_HELPERS
flag to all projects but only enable it for WorkDir
like it is now.
Today I rebased many times and I realised having local changes to CMakeLists.txt
re-runs cmake
every single time and I got a bit annoyed.
At some point maybe we may also want to make a common file with such flags for all projects (also changing to HepMC3 was a bit tedious).
Keeping draft as I'd like to hear back from @fwinkl and @akraszna first.