Add BNC to Interlay DEX and Lending markets

There are currently no lending markets for Bifrost’s BNC token (although Bifrost is introducing money markets soon) so Interlay has an opportunity to capture some of the BNC lending market.

This proposal will:
• add BNC to the Interlay DEX (as BNC-INTR pair)
• create a money market for lending and borrowing BNC

Settings for the BNC lending market:
• You will be able to take out loans against BNC collateral at a “Loan to Value” of 51%. Over time if the value of your loan vs collateral rises to 76% then the collateral will be liquidated.
• The lending market targets an optimal utilization of 80%. It will start with a borrowing rate of 0.25% with the borrowing rate slowly increasing to 4% once 80% of the loaned BNC is borrowed. Above that, the borrowing rate quickly increases to 50% APR if 100% of the available BNC is borrowed.
• Overall the BNC money market has a supply/borrow cap of $350k.

This proposal DOES NOT allocate any INTR rewards for either the DEX LP or the lending market.
This proposal DOES NOT enable BNC use for vault collateral. That can be discussed by the community in a separate proposal.

Neither the Bifrost nor Interlay websites currently support transferring BNC. The Interlay team will be asked to add BNC transfers, DEX swaps, and BNC lending market to the website as part of this proposal.

The Interlay team wrote scripts and a guide to creating governance proposals to enable the Interlay community to execute on the many suggestions that the community makes, supporting further decentralization of protocol governance. Proposal creators are reimbursed from the Interlay treasury based on the effort required for each proposal.

Proposal guide: https://interlay.notion.site/Registering-new-token-using-script-139015d02fb34fd38d078fdf3e8d1f94

Therefore this governance proposal will reimburse me 7 hrs x $100/hr = $700 in Interlay tokens. This amount is only paid if the entire proposal successfully executes.