How do you submit a Gutenberg plugin?

I’m sure this must have been asked and answered, but, I’ve searched here under "submit" and "commit" and a bunch of other things, and I seem to be missing the right words.

I’m probably a week or two away from being ready to submit my first plugin. It’s a new block. The [developer information][1] says it needs to be in a subversion repository. But, all of the Gutenberg blocks seem to be in Github. Also, they’re primarily developed in ESNext, and so you have to do a build process before they’re compatible with almost anything.

Is there a link somewhere on how to "submit" a new block? Also, what does "submission" entail? Is there a place to get initial feedback / review?

How does one go about submitting their first Gutenberg plugin?

Thanks!