introduces a new openapi-gen parser that replaces the old EJS-based generator

[aliamerj]

This PR introduces a new openapi-gen parser that replaces the old EJS-based generator.

Why?

• The old approach relied on templates and third-party tools like swagger-codegen.
• It was brittle, hard to extend, and not easy to maintain.

What’s new

• No external deps → everything runs with plain TypeScript and TSX, no swagger-codegen or other codegen libraries.
• Full OpenAPI 3.1 support → handles $ref, allOf, oneOf, arrays, enums, nullables, min/max constraints.
• Consistent request/response schema → produces a clean, predictable object model (works great for docs + UI components).
• Examples preserved → examples are extracted and aligned with the schema.
• Extensible → easy to plug in custom rules (e.g. Markdown/MDX generation, TSX components, etc.).

Usage

Run the parser with npm

npm run api-gen

Run the parser directly with ts-node:

ts-node index.ts <openapi-url> [output-dir]

• <openapi-url> → Path or URL to an OpenAPI YAML file
• [output-dir] → (optional) Output directory, defaults to src/pages/ipa/resources

Example:

ts-node index.ts ./openapi.yml ./docs/api

This will parse the spec, generate MDX files per tag, and write them into ./docs/api.