Diagram: high-level architecture of all abstractions

[cwgoes]

High level view; reference architecture diagram, presents broad view of data flow and different components, would be helpful for spec readers, where are the modules, what modules are specified, mention where the details are.

[cwgoes]

One option is LucidChart although honestly I am leaning towards a photo of a whiteboard.

[cwgoes]

In ASCII in ICS 24 for now, @ancazamfir let me know if this isn't what you were looking for.

[gjermundgaraba]

This issue was mistakenly reopened during some integration work, so closing again now.