feat(wrapped-keys): add EIP-712 signTypedData functionality

[kouraf]

Description

This PR adds signTypedData functionality to the wrapped-keys package, enabling users to sign EIP-712 typed data using encrypted Ethereum keys. The implementation includes both the API layer and the underlying Lit Action functionality.

Key Changes:

• Added signTypedDataWithEncryptedKey API function for signing typed data
• Implemented signTypedDataEthereumKey Lit Action for actual signing logic
• Enhanced type definitions to support typed data message parameters
• Updated code repository and constants to include new signTypedData actions

Note: I'm unsure if this implementation meets your standards, but I needed this functionality ASAP for my project and it's working a 100% as expected. I'm happy to make any required changes to make it production-ready. I also have a signRawMessage implementation that I didn't include here to keep the PR cleaner.

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

How Has This Been Tested?

• End-to-end testing with real PKP sessions

[Ansonhkg]

Hi @kouraf, thanks for the PR!

Could you please also add tests in local-tests/tests/wrapped-keys, you could see how other tests are written in the same directory.

Thanks!

[kouraf]

Hi @Ansonhkg do you have an up to date readme for running tests ? the one in local-tests says to use lit-assets but couldn't find it. and when i use run yarn test:local without setting the network to custom, i got a bunch of errors saying insufficient funds and [𐬺🧪 Tinny Environment𐬺] No available keys. Waiting...
i may be missing something if that's the case sorry for that!

[Ansonhkg]

Hi @Ansonhkg do you have an up to date readme for running tests ? the one in local-tests says to use lit-assets but couldn't find it. and when i use run yarn test:local without setting the network to custom, i got a bunch of errors saying insufficient funds and [𐬺🧪 Tinny Environment𐬺] No available keys. Waiting... i may be missing something if that's the case sorry for that!

Yea sorry for the outdated docs, been busy on Naga!

yarn test:local is testing against local nodes using the lit-assets repo, I supposed you won't have access to this as it's private. So you will need to test it against live nodes.

You can do:

// datil-dev for Dev, datil-test for Test, datil for Mainnet
NETWORK=datil-dev yarn test:local --filter=<your_test_name>

You must also have the PRIVATE_KEYS env set, it accepts a string array of private keys. eg.

PRIVATE_KEYS="0x...1, 0x...2"

If you still can't run the tests, just commit the changes for the tests and we will take a look :)

[kouraf]

Hi @Ansonhkg , I’ve added the tests and ran them on datil-dev with my keys. I also added some types.