feat(zkgm): introduce automated market maker (solvers) (#4735)

A new capability in FungibleAssetOrderV2 that allows smart contracts to
programmatically fill cross-chain transfer orders with custom logic:
- Quote tokens can now be solver contracts that implement custom
fulfillment logic
  - Protocol detects solvers via ERC165 (Solidity) or queries (CosmWasm)
- Solvers receive complete order details including packet, caller,
relayer info, and intent flag
- If solver fails, returns ACK_ERR_ONLYMAKER allowing other market
makers to fill