Generalize and expose inner functions

[pocesar]

Would be great to have access to the registry, loader, etc. When loading functions from other folders and without initializing a server, it's impossible to get it loaded into the registry without jumping through a lot of hoops.

[josephlewis42]

Hi @pocesar, can you provide additional context about what you're trying to do here, what you'd expect to happen, and what is actually happening instead?