Add Arxon chain (chainId 7171) (#8163)

Co-authored-by: Arxon Dev <dev@arxon.io>
Co-authored-by: ligi <ligi@ligi.de>

Author: 3 people

_data/eip155-7171.json

@@ -0,0 +1,18 @@
+{
+  "name": "Arxon",
+  "chain": "ARX",
+  "rpc": [
+    "https://testnet.arxon.io:9944"
+  ],
+  "faucets": [],
+  "nativeCurrency": {
+    "name": "ARX",
+    "symbol": "ARX",
+    "decimals": 18
+  },
+  "infoURL": "https://arxon.io",
+  "shortName": "arx",
+  "chainId": 7171,
+  "networkId": 7171,
+  "explorers": []
+}