Add ability to execute asset swap as part of arbitrum chain deposit

[JonRay15]

The Chore

In the Arbiitrum deposit flow we shoudl be able to use the Squid SDK to allow users to swap one Arb asset for another as part of their deposit.

Accepatnce criteria

• [ ] When depositing an Arb asset display a "From Asset" dropdown too which can be set to any asset the user has in their currently connected Arbitrum wallet
• [ ] Use Squid SDK to execute the swap as part of the deposit flow

Additional details / background info