feat: support streamlit custom component

[longxiaofei]

In streamlit, pygwalker support render pygwalker html by streamlit custom component.

And supports return spec when spec changes.

example:

from pygwalker.api.streamlit import StreamlitRenderer
import pandas as pd
import streamlit as st

@st.cache_resource
def get_pyg_renderer() -> "StreamlitRenderer":
    df = pd.read_csv("xxx")
    return StreamlitRenderer(df)

renderer = get_pyg_renderer()

event = renderer.explorer()

print(event)