feat(sui): add its examples

[npty]

Description

https://axelarnetwork.atlassian.net/browse/AXE-5771
https://axelarnetwork.atlassian.net/browse/AXE-6071

This PR added ITS example script where it demonstrates bi-directional transfers and deployments for lock/unlock token and provided a guide to follow in this link.

The contract source code for this example is here

For Axelaron Team

You may interested in events emitted from the example commands. Here're the details:

Outgoing Flow

• For send-token command, there'll be InterchainTransfer, ContractCall, and GasPaid events emitted.
• For send-deployment command, the events emitted will be similar to above except it emits InterchainTokenDeploymentStarted instead of InterchainTransfer event.

Incoming Flow

• For gateway's approve command, there'll be MessageApproved event emitted after the message is approved by the gateway.
• Both receive-token and receive-deployment commands utilize a shared function found here. This will demonstrate how to execute any arbitrary message on Sui chain. Most complicated logic is coming from the execute function which is exported from the axelar-cgp-sui package. So you may want to implement something similar to it. The move calls should be chained until the is_final flag is false.

Other Changes

• Updated the gmp guide to align with the ITS guide.
• Updated the gmp example to use the same pattern to receive gmp message
• Added a script that interacts with the its contract directly e.g. setup trusted address