UMIP24 -Add DEFI_PULSE_TOTAL_TVL and SUSHIUNI_TVL as supported price identifiers

The DVM should support price requests for the following Total Value Locked (TVL) derivatives:

  1. Sum of TVL for all projects on DeFi Pulse divided by 1,000,000,000
  2. 10 multiplied by the ratio of TVL of Sushi Swap over Uniswap