feat: add bridge command for cross-chain transfers

[blakecduncan]

Summary

• add alchemy bridge quote and alchemy bridge execute for cross-chain transfers using requestQuoteV0 with toChainId
• validate source and destination networks, clarify bridge help text, and resolve destination token metadata on --to-network
• add bridge tests covering quote, execute, raw calls, paymaster permits, slippage validation, and same-network rejection

Test plan

• pnpm vitest run tests/commands/bridge.test.ts tests/commands/swap.test.ts
• pnpm lint
• Optional manual execute test with funded wallets on supported mainnets

Bridging eth from Arb to Base

Made with Cursor