Implement a function that shows a 2d array (an analog of the imshow() function in matplotlib)

[mkondratyev85]

It would be very helpful if plotlars would have an implementation of a function that can plot 2d array.

For example, the matplotlib python package has a whole family of functions that can do it. A good example is the imshow() function:
https://matplotlib.org/stable/api/_as_gen/matplotlib.pyplot.imshow.html

A very nice crate! I thinks the rust ecosystem was missing something like this for a long time.