Add a save-to-file example in circuit visualization

URL, if applicable

https://docs.quantum.ibm.com/guides/visualize-circuits

Describe the new content you are requesting.

Our docs often promote utility size experiments. However, trying to draw a large scale circuit in a Jupyter Notebook often takes a long time even if it manages to complete without crashing. Not to mention the output is often unreadable. The more realistic way right now is to save the output to a file, which one can then zoom in and out as needed.

While the page does mention it's possible to save the output to a file, having a code example would encourage and normalize that behavior.

If this new content request is accepted, do you want to write the content?

I only want to review the material when it's finished