Add another branch to run PTBs on IOTA Testnet

[salaheldinsoliman]

As you may know, IOTA recently released its Move based Testnet.
There is an IOTA TS SDK: https://docs.iota.org/ts-sdk/typescript/ , that we could import and use to construct and deploy PTBs to IOTA's testnet, but a PR in the main branch would be cumbersome as this would need changing the static imports to dynamic import instead (to support importing different SDKs based on a runtime value).
I propose another branch, maybe call it iota, that uses the IOTA SDK instead of SUI's, then making a note about it in the README.

What do you think?