add: Brainiall Company Enrichment Action - #6

What changed

Adds one tool entry for Brainiall Company Enrichment Action. The entry links to the maintained open-source GitHub Action and its importable n8n workflow.

Why

The tool solves a bounded developer workflow: accept one user-supplied company domain, retrieve one source-backed website-metadata candidate through Apify, and make the result available for human review before CRM or procurement use.

User impact and limits

• The action and workflow are MIT licensed.
• The caller supplies an Apify token through secret storage.
• Each request is capped at one result and US$0.02.
• Results are explicitly described as website-derived candidates, not registry, credit, email, or compliance data.
• The listing marks pricing as freemium because the source is free while Apify/Actor usage may be metered.

Disclosure: this contribution is submitted by BRAINIALL, the tool operator.

Validation

• Frontmatter parsed with Ruby's safe YAML loader and all required tool fields were present.
• Slug matches the filename.
• git diff --check passed.
• Repository URL returned HTTP 200.
• Hugo was not installed locally; this PR changes only one content file.