WIP: Provide pipeline to generate API documentation

Summary:
There are two documentations to produce:

• cargo doc for the Rust crate
• Swagger/OpenAPI to provide an API reference

Test Plan:
Browse the two documentation URL:

• https://docs.nasqueron.org/docker-registry-api/rust
• https://docs.nasqueron.org/docker-registry-api/

Reviewers: dereckson

Reviewed By: dereckson

Differential Revision: https://devcentral.nasqueron.org/D1880