Improve the image listing UI to make clear if images support multiple architectures

[deviantintegral]

Over in microsoft/playwright#29819 we determined that while Playwright is publishing multi-arch Docker images, the MCR UI makes it fairly confusing for users to realize that. I think my screenshots at microsoft/playwright#29819 (comment) show how other registries do a much better job of conveying this information.

It would be great if MCR could display images group together, such as "latest" and then all of the architectures published for that tag, instead of showing them all in a linear list.

[pcgeek86]

I can't easily figure out which PowerShell container image tags support aarch64. This UI improvement really needs to be implemented, so I can see which tags support which CPU architectures.