feat: added hashfire testnet chain (#1753)

Author: 0xheartcode

constants/additionalChainRegistry/chainid-4227.js

@@ -0,0 +1,26 @@
+export const data = {
+    "name": "Hashfire Testnet",
+    "chain": "Hashfire Testnet",
+    "icon": "hashfire",
+    "rpc": [
+      "https://subnets.avax.network/hashfire/testnet/rpc",
+    ],
+    "features": [{ "name": "EIP155" }, { "name": "EIP1559" }],
+    "faucets": [],
+    "nativeCurrency": {
+      "name": "HASHD",
+      "symbol": "HASHD",
+      "decimals": 18
+    },
+    "infoURL": "https://hashfire.xyz/",
+    "shortName": "hashfire",
+    "chainId": 4227,
+    "networkId": 4227,
+    "explorers": [
+      {
+        "name": "Avalanche L1 Explorer",
+        "url": "https://subnets-test.avax.network/hashfire/",
+        "standard": "EIP3091"
+      }
+    ]
+  }