feat(typescript): add toggles to disable generated request/response/error/client options

[SM-OliLegg]

Ref: #3850

Hi! I want to make @hey-api/typescript output more configurable for teams that prefer minimal generated artifacts. This PR adds controls to reduce generated TypeScript artifacts when needed.

What’s added

• @hey-api/typescript plugin toggles:
  • requests: false
  • responses: false
  • errors: false
  • clientOptions: false

Why

Some teams only want core schema/definition types. These changes make that output mode configurable.

Included in this PR

• parser read/write transform updates (readWrite, plus per-variant requests / responses controls)
• @hey-api/typescript plugin toggles for requests, responses, errors, and clientOptions
• docs updates for parser and TypeScript plugin configuration
• a regression test covering the minimal-output configuration end-to-end

plugins: [
  {
    name: "@hey-api/typescript",
    requests: false,
    responses: false,
    errors: false,
    clientOptions: false,
  },
],

[mrlubos]

@SM-OliLegg this looks like #3870 on steroids. I can get behind the enabled changes, but not clientOptions. What would happen if you disable it and add a client plugin? Btw I'm pretty sure you can disable ANY output through hooks today, so this pull request is more of a syntax sugar on top of that (which is valid)