Use automatic transformations in AssetPreview

[aulonm]

Hi!

We are looking at our Cloudinary usage and wanted to restrict showing original images when rendering the images in sanity. I see that in the cloudinary plugin you show the original image in AssetPreview.tsx.

Would it be possible to add q_auto,f_auto in the url when showing the preview? This would make cloudinary do an automatic transformation on the format and quality. We dont need 100% quality when showing the preview, so I'm guessing this would benefit every single user of this plugin.

Here is an example on how the URL needs to be for the transformation to happen from cloudinary:
https://res.cloudinary.com/<project>/f_auto,q_auto/<version>/<id>

This would benefit for both v2 and v3 users of this plugin