feat(mfi-v2-ui): new stake page

[chambaz]

New stake page with stake calculator.

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Name	Status	Preview	Comments	Updated (UTC)
marginfi-v2-trading	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 11, 2024 5:33pm
marginfi-v2-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Nov 11, 2024 5:33pm

2 Skipped Deployments

| Name | Status | Preview | Comments | Updated (UTC) | | :--- | :----- | :------ | :------- | :------ | | **marginfi-landing-page** | ⬜️ Skipped ([Inspect](https://vercel.com/mrgn/marginfi-landing-page/BmfWjT56a2SKaEyYtoH7aAGMD1Wq)) | | | Nov 11, 2024 5:33pm | | **marginfi-v2-docs** | ⬜️ Skipped ([Inspect](https://vercel.com/mrgn/marginfi-v2-docs/Gpi4UKwbFyp3yXdPWtWZkjeajnvr)) | | | Nov 11, 2024 5:33pm |

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_{Last updated for commit d88c981. This comment will update as new commits are pushed.}