Geo - Create Uploads Endpoint in GraphQL

What/Why

Related to #219402 (closed)

Currently, Uploads is still being served via Rails with no endpoint whatsoever. To convert to Vue and support via Self Service, we will need a way to fetch the data. As part of our efforts this API should be built in GraphQL.

Proposal

Add Uploads as a GraphQL endpoint, supporting all existing Rails functionality
Take into consideration #219402 (closed) when implementing

cc: @mkozono