[Feature] Add on chain exposure for any asset class via derivatives

[michael-spengler]

This might be done by adding a connection to https://synthetix.exchange if it continues to prove reliable and trustworthy.

[michael-spengler]

Background Info also via https://synthetix.io/ or via https://discordapp.com/invite/AEdUHzt

[michael-spengler]

https://github.com/michael-spengler/decentralized-finance/blob/main/src/on-chain-exposure-to-any-asset-class/synthetix.service.ts