Add support for multiple imshow on the same plot, with opacity slider

This displays two imshow images in two different tabs:

import plotly.express as px
import numpy as np
from skimage import io

img = io.imread('https://upload.wikimedia.org/wikipedia/commons/thumb/0/00/Crab_Nebula.jpg/240px-Crab_Nebula.jpg')
fig = px.imshow(img)

x = np.random.random((100, 200))
fig2 = px.imshow(x)

fig.show()
fig2.show()

Is there planned support for displaying the two "imshow" on the same plot, with an opacity slider for both layers?

(even if the two 2D-arrays are of different shape - this is possible in matplotlib with the extent parameter of imshow)

首先檢查範例中展示的現有 px.imshow 行為，以及 Plotly 如何表示影像圖層。該 issue 沒有指定檔案或測試；完成的標準是在同一個繪圖中顯示兩個形狀可能不同的影像，並為兩個圖層提供不透明度控制。