Relayer CLI for MsgConnectionOpenTry

[adizere]

Crate

mostly relayer and relayer-cli, but may cross into modules also

Problem Definition

Implement support for command:

relayer tx raw conn-try <to-chain-B> <remote-chain-A> <conn-id-on-A>

• sends request to local client for chain-A to retrieve latest header header_A with height ha
• makes the following queries to chain-A at height ha-1:
  - the connection with id conn-id-on-A with proof, stores results in connection and init_proof
  - the state of client with id connection.client_id and retrieves the height of last consensus state, last_cs_height
  - the consensus state for client with id connection.client_id and height last_cs_height with proof, consensus_proof
• sends a MsgUpdateState to chain-B with:

        client_id = connection.counterparty_client_id, 
        header = header_A, 
        signer = get_account(to-chain-B)

• sends a MsgConnectionOpenTry to chain-B with

        connection_id = connection.counterparty_connection_id,
        client_id = connection.counterparty_client_id,
        counterparty_connection_id = conn-id-on-A,
        counterparty_client_id = connection.client_id,
        counterparty_commitment_prefix = get_store_prefix(remote-chain-A),
        counterparty_versions: connection.versions,
        init_proof,
        consensus_proof,
        proofs_height = ha,
        consensus_height = last_cs_height,
        signer = get_account(to-chain-B)

Note: get_... are functions that retrieve information from the relayer configuration.

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[ancazamfir]

Closed via #388