Motivation

Integrates signature from alloy-rs/core#776

Depends on alloy-rs/eips#12 and alloy-rs/core#796, needs minor releases for core and eips

Solution

Changes in this PR:

• Transaction encoding is made a bit more verbose as signature.v() is now encoded and accounted in length separately
• Validation/adjustments of signature parity value are removed
• Legacy transaction decoding now handles decoding of parity manually by decoding it into u64 and extracting chain_id when possible. Encoding manually encodes chain_id into boolean parity as per EIP-155 spec.
• sign_transaction_with_chain_id macro no more adjusts the signature. as long as signer signed the correct payload with chain_id we are fine with parity being boolean, and legacy transaction encoding methods will figure out how to encode it into integer
• signed_legacy_serde module is added which should be used for serialization of Signed<TxLegacy> to respect the specification requiring parity being serialized as EIP-155 compliant v key.

This is not perfect from our pov because we now have more boilerplate logic for parity encoding. However, this makes encoding API safer without any changes to it.

One limitation here is that Signed<TxLegacy> on its own would be serialized incorrectly with yParity key. We can't implement serialize directly on individual Signed<_> types because this would make it impossible to implement serde for Signed<_> with custom transaction. For now I've added with = "signed_legacy_serde" to envelope legacy variants which should ensure that enveloped transactions are always (de)serialized correctly

PR Checklist

• Added Tests
• Added Documentation
• Breaking changes