feature request: make graph_objects also dataframe agnostic

I was wondering, since narwhals was such a success in the plotly express api, whether the graph_objects api could get the same treatment. For the few trace types I tried (Scatter, Bar), arguments such as x, y, marker_color etc., accept tuple, list, numpy array, or pandas Series.

It would be great to be able to pass arrow or polars series as well, via narwhals, though I have no idea how feasible that would really be.

Desired outcome would be something like this:

"""
Fresh environment
>>> uv init
>>> uv add plotly polars
"""

import plotly.graph_objects as go
import polars as pl

df = pl.DataFrame({"x": [0, 1, 2, 3, 4], "y": [0, 1, 4, 9, 16]})

fig = go.Figure()
fig.add_trace(
    go.Scatter(x=df["x"], y=df["y"]),
)
fig.show()

Currently one has to either transform to a list, pandas series, or if numpy is installed, there is some implicit transformation, which allows to pass polars series directly.

首先透過 graph_objects API 重現提供的 polars 範例，重點關注使用 Scatter 和 Bar 的 go.Figure.add_trace。檢查其 x、y 和 marker_color 引數目前如何處理列表、NumPy 陣列和 pandas Series。當相關的 graph_objects trace 引數能夠透過 narwhals 接受 polars 和 Arrow series，而不需要轉換時，即表示完成。