Prop 113: Add USK Metadata to Gravity Bridge

This proposal connects the USK token from Kujira to the Gravity Bridge. If accepted, it would establish metadata for the IBC denom ibc/AD355DD10DF3C25CD42B5812F34077A1235DF343ED49A633B4E76AE98F3B78BC. This metadata would then be usable to deploy an ERC20 representation on Ethereum for the USK token. Voters should verify that the ibc hash is on channel-107, that this channel matches the forwarding proposal submitted at the same time, and that the denom trace is for the correct token. This can be done using gravity query ibc-transfer denom-trace ibc/AD355DD10DF3C25CD42B5812F34077A1235DF343ED49A633B4E76AE98F3B78BC. For more about Kujira see https://kujira.app/ and https://twitter.com/TeamKujira