Common Isolation & Selection Frameworks 72X Edition

#4685 + Code review comments and improvement of user interface.
Update of TWiki to come soon.

Also integrates code into MiniAOD, right now only electron IDs are embedded.

No ID code is run in the standard reconstruction at present.
We will need to talk to Validation/DQM about how to port the IDs that are used there into the framework.

Backports: 71X - #5015, 70X - #5014

@ikrav @Sam-Harper @arizzi
We'll never use 7x7, 5x5 is determined by the physical properties of the ECAL. Const strings are fine here. Will move to constexpr private members. No need to be configurable.