Dev config parsing

[alex-brinkman]

See the goals of this MR are contained in issue #96

Formalize device configuration with a std::variant typedef'ed to DeviceConfig to permit querying the device in programmatic manner through the manager

This is a "Minimal" change to set things up for follow-on MRs. This diff expands the type definitions in yaml input files and creates libyamlcpp encoder/decoder functions.

• Make use of the new autocoded functions in the Manager class