Large-R jet with new Jet reco algs & configuration

This MR implements the reconstruction of large-R jets (including grooming) with the new jet config.

It implies 3 main changes :

• Some adaptations of the new config system (offline and trigger)
• Introduction of new tools for the SoftDrop grooming algs. These are compatible with the IJetProvider interface (and are all grouped in 1 single .h/.cxx file since they're all simple variations of a same base class)
• Introduction of a standard config module for large-R jets

Also I fix a small bug in the configuration flag (see AllConfigFlags.py)

tagging experts : @khoo, @wbalunas @sawyer @jbossios @cdelitzs @mswiatlo