Add RAML support for People and Beers proxy APIs

[HolimaX]

Add RAML 1.0 specs for recognizable API endpoints used in src/actions/beerActions.js:

• /api/people (proxy)
• /api/people/{page} (pagination)
• /api/people/{keyword} (search)
• /api/people/{voteid} (details)
• /v2/beers (public API, example)
• /v2/beers?beer_name={keyword} (search)able REST API endpoints for cluster registration/provisioning and health check (from integration/Java/README.md and app code).
• Place spec(s) in api/ as provisioning.raml and health.raml.
• Add GitHub Actions workflow for validating RAML files (raml-cop or amf-cli).
• Use raml2html to generate HTML docs in docs/api/.
• Mention in root README where RAML and docs can be found.

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Reference: integration/Java/README.md