Refactor and add unit testing

[suhaotian]

The goals:

• Refactor code
• Export API SDK: Support ESM and CommonJS
• Export API SDK: Support generating Vue Query hooks (Currently, supports SWR and React Query)
  • Support generating multiple libs hooks at the same time
  • Add Solidjs and Svelte TanStack Query support
• Use script to extract API info from *.apiconf.ts (before using tsc to build JS from TS first then require, and it's slow)
• Unit testing
  • tsdk
  • tsdk-server-adapters
  • tsdk/fe-sdk-template
• Support valibot / zod/v4 / arktype with https://github.com/standard-schema/standard-schema
• Export API SDK supports running on Web Workers
• [ ] tsdk-server-adapters: more convenient setup API
• Publish alpha (npm install tsdk@alpha tsdk-server-adapters@alpha)
• E2E testing
  • Different bundlers and frameworks: Vite / Webpack / Next.js / Remix (React Router)
  • Different adapters: Express / Fastify / Hono / Socket.io
  • Hooks tests: SWR / Vue Query / React Query / Solidjs / Svelte
    • update data
    • query data
    • focus refresh
    • when key is undefined shouldn't update or query
    • disable focus refresh
    • socket.io adapter / fetch adapter(axios/xior)
• tsdk shared folder and files name changing:
  - shared/ -> tsdk-shared/
  - shared/tsdk-helper.ts -> tsdk-shared/helpers.ts
  - shared/tsdk-types.ts -> tsdk-shared/types.ts
• Starter (or templates)
  • frontend-sdk template — API SDK export-only template (No backend API development)
  • fullstack-forge template — Type-safe API development template (Express / Fastify / Hono / Socket.io)
• dogfood tsdk
• Support transform openapi.json to tsdk sdk
• Add watch mode
• [ ] Export API SDK: OpenAPI documentation generated
• make unit tests and e2e tests make sense
• [ ] Experiment: switch nest-cli to vite keep nest-cli
• Better API SDK documentation
• Better documentation
• AI-friendly