feat: allow multi signature/approval transactions

[sakulstra]

General Changes

Allows signing more than one things for txns that might need that

Developer Notes

It's just a prototype, plz don't review yet

Author Checklist

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Reviewer Checklist

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• [ ] End-to-end tests are passing without any errors
• [ ] Code style generally follows existing patterns
• [ ] Code changes do not significantly increase the application bundle size
• [ ] If there are new 3rd-party packages, they do not introduce potential security threats
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[github-actions[bot]]

✅ CI run has succeded! You can find tests and deployment logs at https://github.com/aave/interface/actions/runs/3437230820'

[github-actions[bot]]

📦 Next.js Bundle Analysis

This analysis was generated by the next.js bundle analysis action 🤖

⚠️ Global Bundle Size Increased

Page	Size (compressed)
global	471.69 KB (🟡 +794 B)

Details

The global bundle is the javascript bundle that loads alongside every page. It is in its own category because its impact is much higher - an increase to its size means that every page on your website loads slower, and a decrease means every page loads faster.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

If you want further insight into what is behind the changes, give @next/bundle-analyzer a try!

One Page Changed Size

The following page changed size from the code in this PR compared to its base branch:

Page	Size (compressed)	First Load
/staking	20.47 KB (🟢 -9 B)	492.15 KB

Details

Only the gzipped size is provided here based on an expert tip.

First Load is the size of the global bundle plus the bundle for the individual page. If a user were to show up to your website and land on a given page, the first load size represents the amount of javascript that user would need to download. If next/link is used, subsequent page loads would only need to download that page's bundle (the number in the "Size" column), since the global bundle has already been downloaded.

Any third party scripts you have added directly to your app using the <script> tag are not accounted for in this analysis

Next to the size is how much the size has increased or decreased compared with the base branch of this PR. If this percentage has increased by 20% or more, there will be a red status indicator applied, indicating that special attention should be given to this.

[github-actions[bot]]

• Ipfs hash: bafybeidu3yn36rg4ju4qzlxnjwuhl5ja46wqhnggsamy7yv3nran6bbjkm
• Ipfs preview link: https://bafybeidu3yn36rg4ju4qzlxnjwuhl5ja46wqhnggsamy7yv3nran6bbjkm.ipfs.cf-ipfs.com/

[github-actions[bot]]

✅ CI run has succeded! You can find tests and deployment logs at https://github.com/aave/interface/actions/runs/3443845007'

[github-actions[bot]]

• Ipfs hash: bafybeiftnds25fwvvnnmojtbf7r53vdcbvnove5mc3qydd4u7civkernnu
• Ipfs preview link: https://bafybeiftnds25fwvvnnmojtbf7r53vdcbvnove5mc3qydd4u7civkernnu.ipfs.cf-ipfs.com/

[defispartan]

A separate tx handler was added for migration tool to support multi-approval txns. #1513 will add a bundle tx handler which will work with a new utilities version and generalize support for multi-approval and switching between approval / permit