An option to show templates that use a feature in feature search

[groner]

Seems like it would be useful.

[CodeMan99]

Unfortunately, it seems there's no upstream enforcement of the featureIds field in templates.

oras pull ghcr.io/devcontainers/index:latest
jq . devcontainer-index.json | less

Which means this would require either an upstream (breaking) change or parsing the tarball of every template.