Add support for getting price with multihop route

[tuantran1702]

Current Limitation

Price data is only available for token pairs with existing liquidity pools on Osmosis. The Multihop route is calculated off-chain.
https://github.com/osmosis-labs/osmosis/blob/e4290c54c0f77b91b6a08bdad1ec62f9739dc963/x/poolmanager/README.md#multi-hop

Desired Functionality

Enable price fetching for any supported token against the native token, regardless of whether a liquidity pool exists. This capability is needed to accurately calculate fees for a wider range of token pairs.

[tuantran1702]

probably can utilize Sidecar Query Server to fetch price on multihop based swap:
ion -> osmo-> localStarOnOsmo(ibc/transfer/channel-6061/ustars)
Example result
Sidecar Query Server Integration Guide

[faddat]

I think that the sidecar is mainly for serving our PC requests concerning the price. Joe I think we may need to invent something better, but I'm not claiming to know what that is just yet.

Do you have any thoughts?

[faddat]

You know actually if they use Slinky, and I think that they may, this might be a good path forward. I will ask their team

[faddat]

But they do not use Slinky, and probably that is not a good solution for this. I think that the best solution might actually be to just pull prices from osmosis using ICA but then route transactions using pfm.

[tuantran1702]

But they do not use Slinky, and probably that is not a good solution for this. I think that the best solution might actually be to just pull prices from osmosis using ICA but then route transactions using pfm.

The problem is that the multihop route is calculated off-chain sir @faddat.
https://github.com/osmosis-labs/osmosis/blob/e4290c54c0f77b91b6a08bdad1ec62f9739dc963/x/poolmanager/README.md#multi-hop