Implement consolidation of apidocs for OONI Services

[hellais]

Service docs are available at the direct endpoint address like this:

• https://ooniauth.api.dev.ooni.io/docs
• https://oonirun.api.dev.ooni.io/docs

We should implement a service that merges together all the openapi specs into a single one that can be viewed by accessing:

• https://api.dev.ooni.io/docs/

[hellais]

One approach to doing this could be to make this be part of the docs generation process and publish them on docs.ooni.org.

It's possible to extract the openapi specifications using:

from fastapi.openapi.utils import get_openapi
from .main import app
from .__about__ import VERSION

openapi = get_openapi(title="OONI Findings", version=VERSION, routes=app.routes)
print(openapi)

And then apply some merging logic to build the composite json file which can then be served on starlight using something like: https://starlight-openapi.vercel.app/