ICS-27 Integration

[xcthulhu]

Description

We need to implement ICS-27 integration into Golden Gate. This ICS describes the interface exposed by the standard IBC implementation (referred to as the IBC handler) to modules within the same state machine, and the implementation of that interface by the IBC handler.

Definition of "Done"

Implement the handles described in the spec for ICS-27.

Suggested Solution

Work with octopus network to implement ICS-27 in substrate-ibc.