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)

Tasks:

• Add api/platformapps.raml and api/beers.raml describing the request/response for the above endpoints.
• Add a lint+validation job to CI (.github/workflows/nodejs.yml or a new job/file) with raml-cop or amf-cli.
• Document how to generate HTML docs using raml2html, place in docs/api/ if no such folder, else create it.
• Mention new RAML specs/docs in root README.md.

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Reference: src/actions/beerActions.js