Allow for duplicate entries, or at least duplicate repo_names

[cartermp]

(filing issue here since there's no clear path to take in a PR)

OpenTelemetry is currently classified as tracing. However, as a project it spans three signal types so far (tracing, metrics, and logs --> which is tracing, monitoring, and logging in the landscape, respectively) with more in the pipeline.

However, there's no good way to represent that a project spans categories so far. The idea I had was to just duplicate OpenTelemetry in each relevant subcategory, but the build doesn't allow duplicate names or repository names. I could work around that by just pointing at some other opentelemetry repos, but I'd rather open an issue here to see if there's a preferred way to handle this before I go and do something kinda hacky.