Is your feature request related to a problem? Please describe.

When using the native Joomla 4 media manager to select an image, there are several usability issues as an end user:

• If the images in a folder are very large, or there are many images, it is very slow to load the folder (up to 2 minutes) - even on a very fast fiber internet connection. (I was testing on a site with only 100 images per folder, but some were large images up to 10 MB.)
• While loading a slow folder, you are not able to navigate to another folder until the first one is completely done loading.
• The component view of the media manager seems to cache the images for display so it's a bit faster, but I didn't notice any caching at all in the image selection view.

Describe the solution you'd like

There are several possible solutions that would help mitigate the slow loading - any or all of them would help:

• Allow images in the media manager to lazy load so it doesn't take up resources loading off-screen images
• Add (user-configurable?) pagination to the media manager in large folders
• Automatically generate thumbnail images for images on upload and use those when picking an image - don't need to load a 3000px image when it's only being displayed at ~200px wide.
• Cache images in the image selection view so once it's loaded it doesn't have to be loaded from scratch again for the next image field.

I don't know how to fix not being able to navigate folders until the first one is done loading.

Additional context

Before opening this issue I did some looking around at past issues. This has been a hot topic in the past without any resolution for over a year, it would be nice to solve it now. :)

I noticed that the media manager is not loading inline images (with <img> tags), but instead it's setting the images as background images of divs. This seems inefficient but I'm not sure of the direct performance impact. This would definitely be a roadblock to adding native lazy loading though.

I would open a PR to try to solve some of these issues but it seems the media manager is written in Vue.js, making it completely beyond my skill set.