data: add NeuroAPI startup credits

[ja1claudio]

What changed\n\nAdds NeuroAPI and its startup credit grant for eligible early-stage product, agent, and research-tool teams.\n\n## Sources\n\n- https://neuroapi.me/startup-credits\n\n## AI disclosure\n\nAI was used partially to research the public source and draft the catalog record. The submitted facts were checked against the cited first-party page and the record passed the pinned Sourcey Catalog Verifier locally.\n\n## Certification\n\n- [x] I changed only allowed repository content and did not mix vendor YAML with other paths.\n- [x] Public sources substantiate every submitted factual value; any Sourcey-written prose is a neutral summary, not a fabricated vendor quote.\n- [x] I did not author verification, provenance, freshness, or signature claims.\n- [x] My commits include a Signed-off-by line.\n\nCloses #649