feat(mrgn-ui): swap-lend actionbox

[borcherd]

This PR creates a new actionbox type which is a lendbox (to deposit into a bank) but with swap functionality. The user can swap any token into any mrgn bank (on the arena & in mrgn-lend)

[vercel]

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Name	Status	Preview	Comments	Updated (UTC)
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marginfi-v2-ui	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Jan 17, 2025 1:20pm

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[alwaysmeticulous]

✅ Meticulous spotted zero visual differences across 202 screens tested: view results.

Meticulous simulated ~4 hours of user flows which tested 117/1828 of the executable lines edited in your PR¹.

_{1. These 1711 untested lines will likely automatically gain test coverage over the coming days, however if you wish to increase coverage immediately you can do so by interacting with your feature on localhost.}

_{Expected differences? Click here. Last updated for commit a1c2692. This comment will update as new commits are pushed.}