Generate API docs from TS

[SuaYoo]

Introduces a new package as my proposed solution for syncing TS docs with developer docs. The workflow would be as follows:

1. Auto-generate TS docs as JSON every time @telnyx/webrtc is published
2. Make TS doc JSON available via @telnyx/webrtc-api-docs package, sync npm version to @telnyx/webrtc version
3. Add @telnyx/webrtc-api-docs to react-developer-docs
4. Render react-developer-docs based on JSON imported from package

This seems like a sane way to keep versions in sync, instead of storing API versions or even content in another platform like Contentful. You would only need to upgrade the @telnyx/webrtc-api-docs dependency in dev docs and rebuild to get the latest version.

Follow up work to consume JSON would be done in react-developer-docs.

📝 To Do

• All linters pass
• All tests pass
• Change documentation based on my changes

✋ Manual testing

1. Run npm install in packages/js if you haven't done so already
2. Run npm run docs in packages/api-docs. Verify that JSON output in packages/api-docs/lib looks as expected:

{
  "id": 376,
  "name": "VertoMethod",
  "kind": 4,
  "kindString": "Enumeration",
  "flags": {
  "isExported": true
  },
  "children": [
    // ...etc
  ]
}