Proposal for Implementing ERC-2612 and ERC-1271 Support for (w)stETH on L2

[TheDZhon]

As part of the recent Lido V2 upgrade, we've successfully incorporated both ERC-2612 and ERC-1271 standards for stETH. These changes were made in anticipation of the impending Account Abstraction on Ethereum, ensuring our platform remains at the forefront of industry developments.

In light of this progress, We should extend the same support for the wstETH bridged counterpart on Layer 2 (L2). Beyond upgrading Arbi/Optimism, incorporating these standards should be considered a fundamental feature for all future L2 extensions.