Add Swagger endpoint #65
Description
It would be helpful if our endpoints were self documenting via swagger.
This is a standard many web services use to make it easy to discover how they work and to auto-generate clients for them. IMO it's a must for any open web service to have.
I'd estimate adding it would take a day or two of effort (maybe less than a day) since we already use schemas in all our endpoints.
We'd just need to add the fastify-swagger endpoint and double check that all the routes are defined properly.
A nice feature is that in addition to the JSON interface, we'd also be getting a standard web UI which would let folks experiment with comapeo cloud without needing to make an app or make http requests manually.