[Feature Request] fetchpriority on van-image

[tintin10q]

What problem does this feature solve?

It would be great if you could set fetchpriority on van-image components.
Currently this does not work. This property makes the browser fetch images earlier or later with when set on images.
This can be very useful.

The possible values would be:

type fetchpriority = "low" | "high" | "auto"

Here is more info on fetchPriority. https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/fetchPriority and https://addyosmani.com/blog/fetch-priority/

What does the proposed API look like?

<van-image fetchpriority="high" src="https://fastly.jsdelivr.net/npm/@vant/assets/logo.png">

[inottn]

Thanks for your feedback, I will add it in the next version.