OpenZeppelin/canton-stablecoin: stablecoin/daml/Stablecoin/Vault.daml

Daml contract source - OpenZeppelin/canton-stablecoin/stablecoin/daml/Stablecoin/Vault.daml ```daml -- | MakerDAO-esque CDP vault system. -- Users deposit collateral to mint stablecoins. Overcollateralization enforced. -- Undercollateralized vaults can be liquidated by any party (with admin co-sign)