Decide on the libraries to use for GraphQL server

Possible server libraries

• https://ariadnegraphql.org/
• https://graphene-python.org/
• https://github.com/tartiflette/tartiflette
• https://github.com/strawberry-graphql/strawberry

Ariadne provides a schema first approach with an easy API. Well documented. Graphene is a code first approach, more like an ORM.

The initial implementation is using Ariadne. https://forge.softwareheritage.org/source/swh-graphql/repository/master/

Decided to use Ariadne

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Migrated from T3933 (view on Phabricator)