Archive repo, find lambdas a loving home

[WillEngler]

Taking some informal discussions with @HeyZoos and putting them in an issue:

I think we should archive this repo. Of the lambdas, most have been made obsolete:

• Publish, Validate and Transform have been merged into a single lambda. The new lambda lives in the observation-publisher repo.
• Authenticate is no longer used. Contrary to the name, its purpose was to parse Pusher formatted query args.
• MetadataStreamHandler is outmoded. We've chosen to use a REST API (Apiary) for beehive maintainers to communicate metadata changes.
• Archive could/should be a celery task.

That leaves Resolve. Unlike the other Python lambda (Archive), it shouldn't be run under Celery because it needs to run on a tight schedule and we can't let it get blocked behind long batch ETL tasks. But we could move it to the main Plenario repo so that it can share database code.