需要v0.6.10版本以上 
从fl0w1nd佬的代码基础上修改了一丢丢 
"""
title: 联网搜索
description: 原生联网搜索
"""
from pydantic import BaseModel, Field
from typing import Optional, List, Dict, Any

class Filter:
    class Valves(BaseModel):
        icon: str = Field(default="""data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIGZpbGw9Im5vbmUiIHZpZXdCb3g9IjAgMCAyNCAyNCIgc3Ryb2tlLXdpZHRoPSIxLjc1IiBzdHJva2U9...