Create PR About Reproducible Builds

https://reproducible-builds.org/who/

Thanks to @pmconrad and the Core Team, we are now included as a project on the above site. It's important to note that we are next to bitcoin, top row.

The issue links the project's listing on reproducible-builds.org but does not name a file, page, or entry point in the marketing repository. First inspect the repository structure and the linked project listing to determine where a reproducible-builds announcement belongs. Done means a pull request adds the agreed marketing or knowledgebase content, though the target and acceptance criteria need clarification.

Written by the indexing model from the issue text.