`aeaconf2` integration

[safinsingh]

Tracking issue for new config format: https://github.com/safinsingh/aeaconf2

This initial commit contains some basic work for integrating aeaconf2. It does not compile yet. Transitioning should be fairly easy based on what I've done already. Please let me know if I need to make any changes to aeaconf2 to accommodate for aeacus's functionality.