WIP: basic working plugin-evm functionality

[yourbuddyconner]

Here's a PR description for the EVM plugin changes:

Background

What does this PR do?

This PR significantly enhances the EVM plugin functionality with several key improvements:

1. Added core ERC-20 functionality:

   • Added ERC-20 ABI and contract interactions
   • Implemented token balance checking
   • Added support for token transfers

2. Implemented new actions:

   • getBalance: Check ETH/token balances across chains
   • transfer: Native token and ERC-20 transfers
   • Enhanced bridge: Cross-chain token bridging via LiFi
   • Enhanced swap: DEX token swaps
   • via LiFi aggregation

3. Fixed type safety issues and improved error handling

What kind of change is this?

• Features (non-breaking change which adds functionality)
• Bug fixes (non-breaking change which fixes an issue)
• Improvements (misc. changes to existing features)

Risks

Medium:

• Changes to core wallet functionality could impact transaction signing
• Updates to bridge/swap logic could affect cross-chain operations
• ERC-20 integration adds complexity to token handling

Testing

Where should a reviewer start?

1. Review the core changes in:

   • src/actions/bridge.ts
   • src/actions/swap.ts
   • src/actions/transfer.ts
   • src/actions/getbalance.ts

2. Check test implementation:

   • test/setup.ts - Test infrastructure
   • test/actions/bridge.test.ts - Bridge action tests
   • test/providers/wallet.test.ts - Wallet provider tests

Detailed testing steps

1. Test basic ETH operations:

// Check balance
await getbalanceAction.handler(runtime, message, state);

// Transfer ETH
await transferAction.handler(runtime, message, state);

2. Test ERC-20 operations:

// Check USDC balance
await getbalanceAction.handler(runtime, {
  chain: "ethereum",
  tokenAddress: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
});

// Bridge tokens
await bridgeAction.handler(runtime, {
  fromChain: "ethereum",
  toChain: "base",
  amount: "100",
  tokenAddress: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48"
});

Documentation changes needed?

Yes, documentation updates needed for:

• New ERC-20 functionality
• Updated action parameters
• Testing setup and mocking

Deploy Notes

• Requires environment variables:
  • EVM_PRIVATE_KEY
  • ETHERSCAN_API_KEY (optional, for token verification)
• Dependencies on LiFi SDK and viem need to be properly versioned

Related to: #735

[0xCardiE]

Connecting this one, seems here is done most progress > https://github.com/ai16z/eliza/pull/864

[Slava-g1]

Would be cool to add crosschain zaps as well, interacting with main staking protocols to enable direct deposits from other chains

[wtfsayo]

closing since old!