Epic: Send Ojo Price Data via Axlear GMP Transactions

[adamewozniak]

This should likely have its own module for governance transactions.

We need to create a override the IBC transaction type on Ojo which allows ojo to pass information from the KV store directly to axelar's GMP.
Here are the docs for Cosmos -> EVM GMP.

This transaction should:

• Take price info from Ojo's KV store and submit it as metadata to the GMP caller.
• Be trustless - anyone can execute this transaction safely.

Here is the current branch: ojo-network/ojo#304

Here are the rest of the TODOs after this branch is merged in:

• Update parameters in the Relay GMP function ojo#309
• Update TestEncodeABI to be more comprehensive ojo#310
• GMP: Add transaction type for Medians & Standard Deviation relaying ojo#311
• GMP: IBC Validation logic ojo#312
• GMP: Add integration test for msg types ojo#313
• Add GMP middleware for the ojo chain to be callable #6
• GMP: Add GMP middleware integration tests ojo#316

[adamewozniak]

There's one issue with this method - anyone can do these IBC transfers without a wrapper, and axelar can't verify the data passed along belongs to Ojo.

We need to override the IBC transfer functionality to query for oracle data when using axelar's GMP.

Here is the IBC function to override

Cc @rbajollari

[adamewozniak]

Great docs: https://github.com/axelarnetwork/evm-cosmos-gmp-sample/tree/main/native-integration

Using this, we might actually be able to do an implementation where the customer only performs relaying txs against the EVM chain. The message would go from EVM -> Ojo -> EVM