IIP-52: Arbitrary Call Service Standard

[andrii-kl]

This is for discussing the ICON BTP Arbitrary Call Service Standard

[andrii-kl]

Information is difficult to perceive without diagrams of the interaction of components.
As a minimum, I would add a sequence diagram for a successful case and rollback.
@sink772 Do you have any diagrams?

[andrii-kl]

Is current solution/protocol support calls/transfers through the Icon chain?
Chain A -> Chain B (Chain A -> Icon chain -> Chain B)