GitHub action should better support a one-per-repo publishing technique

[joshspicer]

ref: https://github.com/devcontainers/spec/issues/178

This makes it difficult to use the test commands for folks that would like to developer features in a one-per-repo kind of manner

[jcbhmr]

does something like this fit with the usecase? https://github.com/devcontainers-community/publish-feature this is what I've been using to publish features like https://github.com/orgs/devcontainers-community/repositories?q=features-&type=source&language=&sort= 👈 those each from an individual repo and then update the actual feature index collection https://github.com/devcontainers-community/features with https://github.com/devcontainers-community/update-collection

am I understanding the original issue and the ref'ed issues goals and usecase is the same as my own?