Merged in older nuclear branch

Fixed docker login for CI

Incremented version number

Polished CI to be less dependent on specific registry

switched to cached build for dev branch

major rename to lager

prevent CI from generating singularity image on branches unless explicitly requested

Completely restructured initial event generation

updated cmake helper files

added proper resonance generator, streamlined particle/pdg to allow strings inthe config files

renamed barrel -> cone to minimize confusion

Modified config JSON structure

Updated example JSON files

fixed deploy.py for new project structure

added logo print

changed output tree name

Updated README

Fixed header install