Prop 68: Token Registry Proposal: Add Support for AKT,LUNA,JUNO,AXL-USDT

This is a token registry proposal to add support for Akash,Juno,Terra2,Axl USDT. Please note that this will require validators to vote on the price of new listing tokens (AKT,LUNA,JUNO), or risk being slashed. Please check updated price-feeder configuration : https://raw.githubusercontent.com/ojo-network/price-feeder/umee/price-feeder.example.toml.