Integrate new released Falcon3 Family base models

[abdalgader-a]

Context

What is the purpose of this PR?

• Add the set of new released (Dec 2024) Falcon3 base models.
• Add full fine-tuning with single device and multi-devices.
• Add LoRA fine-tuning with single device and multi-devices.

[pytorch-bot]

🔗 Helpful Links

🧪 See artifacts and rendered test results at hud.pytorch.org/pr/pytorch/torchtune/2171

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[joecummings]

This looks pretty great and we'd love to have the new Falcon models!

Could you rebase this on torchtune:main instead of nightly?

[joecummings]

Hey @abdalgader-a - are you still interested in working on this PR?

[abdalgader-a]

Hi @joecummings -- thanks for your interest on Falcon models! We are still working on the process of signing the CLA. Once done, I'll finalize this PR. Thanks!

[ebsmothers]

Hi @abdalgader-a just want to check in on this PR. How is the CLA process going? Please let me know if there's anything you need from us.

[abdalgader-a]

Hi @ebsmothers -- didn't get the approval from our legal team and might take sometime due to some misalignment with Falcon licensee. So, I think we can catch the next release of torchtune.