doc: ability to determine route/path for multihopswap

[thelostone-mc]

Description

While implementing the https://docs.uniswap.org/protocol/guides/swaps/multihop-swaps, does the sdk have a util function which can be invoked by the dApp by simply providing the token address or would the frontend have to take up the task of finding out which LP exist and use that to figure out the path / route

Any guidance on how doc/code snippets would be super helpful