[ARC] Add Support for cbETH

Thanks for your analysis @ChaosLabs .

I see the risk params are conservative, but wanted to know if you took into account that the uniswap liquidity is not full range. This is key for oracles (not a concern atm because of great liquidity in Coinbase venue), but also for liquidations.

As far as I can see in the cbETH/ETH uniswap pair, these are the numbers:

  • Liquidity of ~10K worth of ETH in total
  • Range from 0.94 to 0.99 and from 1.01 to 1.04 with ~15 ETH locked per tick
  • Range from 0.99 to 1.01 with ~300 ETH locked per tick
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