Add Haust testnet (#5975)

* add: haust testnet definition

* fix: remove slash

_data/chains/eip155-1570754601.json

@@ -0,0 +1,30 @@
+{
+  "name": "Haust Testnet",
+  "title": "Haust Testnet",
+  "chain": "Haust-testnet",
+  "rpc": ["https://rpc-test.haust.network"],
+  "faucets": ["https://haust-testnet-faucet.eu-north-2.gateway.fm"],
+  "nativeCurrency": {
+    "name": "HAUST",
+    "symbol": "HAUST",
+    "decimals": 18
+  },
+  "infoURL": "https://haust.network/",
+  "shortName": "hst-test",
+  "chainId": 1570754601,
+  "networkId": 1570754601,
+  "icon": "haust",
+  "explorers": [
+    {
+      "name": "blockscout",
+      "url": "https://haust-testnet-blockscout.eu-north-2.gateway.fm",
+      "icon": "haust",
+      "standard": "EIP3091"
+    }
+  ],
+  "parent": {
+    "type": "L2",
+    "chain": "eip155-11155111",
+    "bridges": [{ "url": "https://haust-testnet-bridge.eu-north-2.gateway.fm" }]
+  }
+}

_data/icons/haust.json

@@ -0,0 +1,8 @@
+[
+  {
+    "url": "ipfs://QmRAjG8kc6PJr3xFGYhq1pWiiDoERD3Wj8wR7Cu59HoFnm",
+    "width": 206,
+    "height": 206,
+    "format": "svg"
+  }
+]