feat: support API2GPT platform (#173)

* support API2GPT platform

* chore: update balance renderer

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Co-authored-by: JustSong <songquanpeng@foxmail.com>

web/src/components/ChannelsTable.js

@@ -36,6 +36,8 @@ function renderBalance(type, balance) {
       return <span>¥{(balance / 10000).toFixed(2)}</span>;
     case 10: // AI Proxy
       return <span>{renderNumber(balance)}</span>;
+    case 12: // API2GPT
+      return <span>¥{balance.toFixed(2)}</span>;
     default:
       return <span>不支持</span>;
   }