AstroBWT algorithm (DERO) support

To test:

- Download https://github.com/deroproject/derosuite/releases/tag/AstroBWT
- Run daemon with `--testnet` in command line

In config.json:
- "coin":"dero"
- "url":"127.0.0.1:30306"
- "daemon:"true"

src/crypto/common/Coin.cpp

@@ -50,7 +50,8 @@ static CoinName const coin_names[] = {
     { "monero",     Coin::MONERO },
     { "xmr",        Coin::MONERO },
     { "arqma",      Coin::ARQMA  },
-    { "arq",        Coin::ARQMA  }
+    { "arq",        Coin::ARQMA  },
+    { "dero",       Coin::DERO   },
 };
 
 
@@ -67,6 +68,9 @@ xmrig::Algorithm::Id xmrig::Coin::algorithm(uint8_t blobVersion) const
     case ARQMA:
         return (blobVersion >= 15) ? Algorithm::RX_ARQ : Algorithm::CN_PICO_0;
 
+    case DERO:
+        return (blobVersion >= 4) ? Algorithm::ASTROBWT_DERO : Algorithm::CN_0;
+
     case INVALID:
         break;
     }