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)

首先检查示例中展示的现有 px.imshow 行为，以及 Plotly 如何表示图像图层。该 issue 没有指定文件或测试；完成的标准是在一个绘图中显示两个形状可能不同的图像，并为两个图层提供不透明度控制。