Xsolla ZK Sepolia Testnet (ethereum-lists#6751)

* Xsolla ZK Sepolia Testnet

* Typo fix

* Tests fix

* ChainId update

* Newline

* Updated chain name

* Clenup

* chainId fix

---------

Co-authored-by: XsollaZK <[email protected]>
Co-authored-by: ligi <[email protected]>

Author: XsollaZK

_data/chains/eip155-555777.json

@@ -0,0 +1,25 @@
+{
+  "name": "Xsolla ZK Sepolia Testnet",
+  "chain": "Xsolla ZK Sepolia",
+  "rpc": ["https://zkrpc-sepolia.xsollazk.com"],
+  "faucets": ["https://xsollazk.com/faucet"],
+  "nativeCurrency": {
+    "name": "Sepolia Ether",
+    "symbol": "ETH",
+    "decimals": 18
+  },
+  "infoURL": "https://xsolla.com/zk",
+  "shortName": "xsollazk-sepolia",
+  "chainId": 555777,
+  "networkId": 555777,
+  "slip44": 1,
+  "icon": "xsollazk",
+  "explorers": [
+    {
+      "name": "Xsolla ZK Sepolia Block Explorer",
+      "url": "https://x.la/explorer",
+      "icon": "xsollazk",
+      "standard": "EIP3091"
+    }
+  ]
+}

_data/icons/xsollazk.json

@@ -0,0 +1,8 @@
+[
+  {
+    "url": "ipfs://bafkreicoqzosjvdfg2b4ijg5ct5jb5ll6j3xonxlocd7j2yx6dlefuhy6m",
+    "width": 512,
+    "height": 512,
+    "format": "svg"
+  }
+]