feat: Add Aave V3 support

[vaniiiii]

Description

Adds Aave v3 protocol support to the VisualSign parser.

Summary of Changes

Protocol Support

• protocols/aave/contracts/pool.rs — Aave V3 Pool contract implementation

  • Supply / Withdraw
  • Borrow / Repay
  • Collateral enable / disable
  • Liquidation calls
  • Flash loans
  • Stable/variable interest rate switching

• protocols/aave/contracts/l2_pool.rs — L2-optimized Pool implementation

  • Gas-optimized calldata encoding
  • Chain-specific logic

Governance Support

• protocols/aave/contracts/voting_machine.rs

  • Cross-chain voting with storage proofs
  • Proposal creation
  • Vote submission
  • Delegation flows

• protocols/aave/contracts/aave_token.rs

  • AAVE token governance & delegation operations

Configuration & Registry

• protocols/aave/config.rs
  • Multi-chain contract addresses
  • Shared token registry
  • Registered tokens: USDC, USDT, DAI, WETH, wstETH
  • Chain → Pool contract mapping

Testing & Validation

• Real transaction test fixtures:
• E2E
• Unit

[prasanna-anchorage]

I'm going to revive this eventually, for now my focus is in merging some design patterns for Ethereum and getting Solana in a good spot. I somehow managed to merge some stuff from that branch and it closed the old PR