Eureka Integration

[david-pinger]

Objective:
Test if a developer on a source - chain S - can send an inference request to a destination chain - chain D - Warden via an IBC on Chiado, verify and fetch the result.

Assumptions & Remarks
The source chain C has an IBC connection to the Hub.
The destination chain D has an IBC connection to the Hub.
The user making the request has gas fees on both chain S and chain D.

Hypothesis
Eureka is not yet released, but there are four routes I want to investigate.
Note, it may be that none or all of these are possible. It's exploratory.

1. Cosmwasm contracts deployed on the Hub (Hub <> Warden)
2. Cosmwasm contracts deployed on S connected to the Hub (e.g. Osmosis <> Hub <> Warden)
3. Solidity contract deployed on Ethereum (e.g. Uniswap <> Hub <> Warden)
4. Solidity contract deployed on an ETH L2 (e.g. GMX on Arbitrum <> Hub <> Warden)

DoD
Create a single IBC connection to the Hub on Chiado
Test transaction for each of the four Routes

Prior work

It may be that it's cosmos hub <> ethereum that needs the IBC eureka connection, and warden <> cosmos hub can even stay on an older IBC connection; needs investigation.

We've investigated a similar ticket before with fewer routes, but without a comprehensive testing.
See test setup here: https://github.com/orgs/warden-protocol/projects/19/views/1?pane=issue&itemId=86875251&issue=warden-protocol%7Cwardenprotocol%7C1064

Eureka is a work in progess and not everything may be fully available / working
https://skip-protocol.notion.site/EXT-IBC-Eureka-Fast-Cheap-and-Seamless-Interoperability-between-Cosmos-and-Ethereum-1968c17818cb80b880d6f2c3b917ae79

https://github.com/cosmos/solidity-ibc-eureka

cosmos/ibc-go#6985

[jlehtimaki]

Linking research ticket: https://github.com/warden-protocol/infra/issues/725

[david-pinger]

Link docs:
https://docs.skip.build/go/eureka/devnet-testing-guide