Enable swaps even if direct pairs don't exist by auto multiple swaps

I was looking at TZERO-ICE swaps but there's no liquidity. I checked in the pool that there are pairs for ICE, for example

ICE-FIRE

ICE-Paper

ICE-Plant

TZERO also has pairs with fire, paper and plant, so the DEX could initiate multiple swaps from this pool to carry out this transaction

TZERO-Paper-ICE

And also the DEX should automatically identify the best possible route and pairs to do 2-step swap for TZERO to ICE (so it could be TZERO - FIRE/PAPER/PLANT - ICE) dependent on whatever intermediate is cheapest to get ICE.