Generalize framework to arbitrary IFOs

[EthanMarx]

Adds a factory function to the ledger for constructing dataclasses that contain waveform fields for arbitrary combinations of ifos.

Uses law config inheritance so that Tune and Sandbox can pull from a single config file for most of their shared configuration, with the option to override those defaults

• [x] Add AFRAME_REPO env variable to allow config inheritance
• [x] Clean up configuration changes

[EthanMarx]

Ran data generation through training with HLV and worked fine. Need to confirm that inference isn't broken.

[EthanMarx]

Successfully ran all the way through inference

[wbenoit26]

Sweet, I'll start taking a look through this then

[EthanMarx]

@wbenoit26 I think I addressed most comments