CryptoNight v8 ReverseWaltz (+asm code and all test vectors)

Co-Authored-By: Vitalius Parubochyi <eddragonwolf@users.noreply.github.com>

src/common/xmrig.h

@@ -76,6 +76,7 @@ enum Variant {
     VARIANT_GPU  = 11, // CryptoNight-GPU (Ryo)
     VARIANT_WOW  = 12, // CryptoNightR (Wownero)
     VARIANT_4    = 13, // CryptoNightR (Monero's variant 4)
+    VARIANT_RWZ  = 14, // CryptoNight variant 2 with 3/4 iterations and reversed shuffle operation (Graft)
     VARIANT_MAX
 };