Extract raw-wiktextract-data.jsonl into per-language wiktextract-data.jsonl and generate graph data

Add Python style check to CI/CD (#3)

Specify languages in graph extract (#2)

Correct README typo (#1)

Enhance README

Enable stycle check in CI/CD

Support Elamite

Enhance subset naming

Support Sanskrit

Resolve keyword clash

Graph data in separate config

Support Korean

Support Akkadian

Support Old Persian

Migrate wilhelm-graphdb Wiktionary data sub-module into wiktionary-data