Story: Design Uniform Request/Response API

[evomimic]

As a DAHN developer, I have a uniform request/response API to implement that supports the dynamic nature of DAHN by delivering responses as holons and requests as actions.

Definition of done:
This is a design spike more than an implementation story -- but the API design will be defined as (unimplemented) RUST functions and associated data structures.

1. RUST functions have been defined for the uniform request/response API
2. The pull request (PR) for pulling this structure into the porto-dev branch as been approved and completed
3. Tests have been run in map-proto to ensure everything works.