Provide option to list and download simulator images

[imthath-m]

Tell us how we can improve Xcodes Currently, I can download and manage multiple xcodes at great speeds using this Xcodes app. But after I download them, I am more than not in need of downloading multiple simulators. It would be great if Xcodes has a way to do that as well.

Is your feature request related to a problem? Please describe. I'm currently using Xcodes CLI tool to download multiple simulator runtimes. I know I can download them from the Xcode app as well, but that is very flaky and I had to restart download multiple times.

What would you like to see? How would you like it to work? Just like I can the see list of installed, available Xcode versions and download them simultaneously, I would like to see list of installed, available SDKs and then down them simultaneously.