Generate code for fantoir-datasource Wikidata qualification

Summary:
Generate the P31_winners vector used to arbitrate between Wikidata
entity "instance of" (P31) claims to pick the most relevant to describe
a pseudo-voie.

Ref T1751.

Test Plan: Assisted-generated code is integrated to D2735.

Reviewers: dereckson

Reviewed By: dereckson

Maniphest Tasks: T1751

Differential Revision: https://devcentral.nasqueron.org/D2737