p22-1 increase JRT-ETH liquidity on Polygon

Goal: reach a liquidity depth of at least $4M on Polygon in a single 5050 JRT-ETH pool to be able to use JRT as collateral.

Context: For using JRT as collateral, we need an on-chain price feed that can be provided by the TWAP of an AMM; TWAP is the average price for the last X blocks. The more liquidity we have, the harder it is to manipulate the price, and the more LTV we can get from JRT and JRT-ETH.

The first part of the proposal is to determine on which AMM to deploy our liquidity. The choice is between Sushiswap and Dfyn.

Both DEXes will grant us rewards, that will be sold automatically by Beefy for JRT and ETH (increasing the number of LP tokens of the vault).

1. SUSHI: we earn SUSHI on both Polygon and Ethereum, we will request the team to stop the incentives on Ethereum to focus them on Polygon.
2. DFYN: we will earn DFYN token.