Consider providing a support table on a json file that projects can easily query

### What is the problem you're trying to solve

As someone working on containerd, I'd like my CI to easily now:
* What's the latest LTS release
* What's the latest Active

Currently we've been parsing content from containerd.io github repo, and then checking for the latest release, but that could've been made easier for consumers.

### Describe the solution you'd like

Create a json file with, which would be auto-generated / auto-updated as part of the release process, and that would contain such information

### Additional context

_No response_