Support for video tags

Hi there,

I know it's called [docusaurus-plugin-**image**-zoom](https://github.com/gabrielcsapo/docusaurus-plugin-image-zoom), but is there a possibility to make this work on ``video`` tags as well?

I use mp4 files on my website because gifs are just so darn large and unoptimized, and I would love to have them zoomable.

I tried adding ``video`` to my selector config, but it just did not work, unfortunately.

Thanks in advance and thanks **again** for building this library. (I think I wrote you an email once, mentioning how much i appreaciate this and that it is exactly what I needed.)

Start by reproducing the issue with the plugin's selector configuration set to video and an MP4 file. Trace how image tags are discovered and zoomed, then verify that video tags can receive the same zoom behavior without breaking existing image support.

Written by the indexing model from the issue text.