Add Nadflip protocol (#17)

Author: thexmikkel

testnet/Nadflip.json

@@ -0,0 +1,18 @@
+{
+    "name": "Nadflip",
+    "description": "Monad Testnet Coinflip with jackpot - Random numbers generated by Pyth Entropy",
+    "categories": [
+        "Gaming::Games",
+        "Consumer::Betting"
+    ],
+    "addresses": {
+        "Coinflip": "0x5E447c5588C551E9959CEc493a40b52768B3d8AE",
+        "Pyth Entropy": "0x36825bf3Fbdf5a29E2d5148bfe7Dcf7B5639e320"
+    },
+    "links": {
+        "project": "https://www.nadflip.com/",
+        "twitter": "https://x.com/nadflip888",
+        "github": "https://github.com/thexmikkel/nadflip-testnet",
+        "docs": "https://github.com/thexmikkel/nadflip-testnet/blob/main/README.md"
+    }
+}