`@0x/contracts-asset-proxy`: Make `bridgeData` last parameter in `IERC20Bridge.withdrawTo()`. `@0x/contracts-asset-proxy`: Reuse `PROXY_ID` as `BRIDGE_SUCCESS`.
`@0x/contracts-asset-proxy`: Make `bridgeData` last parameter in `IERC20Bridge.withdrawTo()`. `@0x/contracts-asset-proxy`: Reuse `PROXY_ID` as `BRIDGE_SUCCESS`.