add web3games chain and icon (ethereum-lists#998)

* add web3games chain and icon

* fix

* fix

* fix standard

* fix shortname

Author: Zombieliu

_data/chains/eip155-102.json

@@ -1,6 +1,7 @@
 {
     "name": "Web3Games Testnet",
     "chain": "Web3Games",
+    "icon": "web3games",
     "rpc": ["https://testnet.web3games.org/evm"],
     "faucets": [],
     "nativeCurrency": {
@@ -9,7 +10,7 @@
         "decimals": 18
     },
     "infoURL": "https://web3games.org/",
-    "shortName": "w3g",
+    "shortName": "tw3g",
     "chainId": 102,
     "networkId": 102
 }

_data/chains/eip155-105.json

@@ -0,0 +1,21 @@
+{
+    "name": "Web3Games Devnet",
+    "chain": "Web3Games",
+    "icon": "web3games",
+    "rpc": ["https://devnet.web3games.org/evm"],
+    "faucets": [],
+    "nativeCurrency": {
+        "name": "Web3Games",
+        "symbol": "W3G",
+        "decimals": 18
+    },
+    "infoURL": "https://web3games.org/",
+    "shortName": "dw3g",
+    "chainId": 105,
+    "networkId": 105,
+    "explorers": [{
+        "name": "Web3Games Explorer",
+        "url": "https://explorer-devnet.web3games.org",
+        "standard": "none"
+    }]
+}

_data/icons/web3games.json

@@ -0,0 +1,8 @@
+[
+    {
+	"url":"ipfs://QmUc57w3UTHiWapNW9oQb1dP57ymtdemTTbpvGkjVHBRCo",
+	"width":192,
+	"height":192,
+	"format":"png"
+    }
+]