UNICORN WALLET: add support for 1271 signatures for giveth app

[divine-comedian]

In order to support donations from unicorn wallet and other smart wallet we should add support for 1271 signatures on the giveth dapp.

Resources

https://docs.alchemy.com/docs/how-to-make-your-dapp-compatible-with-smart-contract-wallets
https://portal.thirdweb.com/references/typescript/v5/verifySignature
https://blog.cometh.io/how-to-make-your-dapp-compatible-with-smart-contract-wallets-using-erc-1271/

AC

while using unicorn wallet on Giveth the user can:

• log in to the giveth dapp
• make single donations to eligible projects in ETH
• make single donations to projects in ERC20 tokens
• update profile information
• create a project
• enable recurring donations for a project they own
• create recurring donations
• modify recurring donation
• deposit tokens into stream balance
• withdraw tokens from stream balance
• stake GIV tokens
• lock GIV tokens for GIVpower
• harvest rewards
• unstake tokens

[divine-comedian]

from @alireza-sharifpour

I think on FE side, some changes are required
because when I connected my wallet, it seems like the where Giveth checks for wallet connection, it's unable to detect Unicorn wallet.
I also couldn't switch my network
With this UI I mean.

Sign in functionality also only works only for Polygon, as the contract address (User's smart wallet) of Unicorn users are deployed on Polygon.

[kkatusic]

@divine-comedian, cc @alireza-sharifpour, I think this is finished now:

#5045

someone should test it.