UMIP 69 -Add BCHDOM, BNBDOM, BSVDOM, DOTDOM, ETHDOM, LINKDOM, LTCDOM, USDTDOM & XRPDOM as price identifiers

The DVM should support price requests for the relative market capitalization indices of these top 9 cryptocurrencies (according to CoinGecko). These indices are commonly known as “dominance” indices. Compared to other typical UMIP price identifiers, these indices are unit-less since they are simply a percentage represented as a whole number.