Declare public type dependencies

[Baijack-star]

Summary

• move @types/ws into dependencies because the published root declarations import from ws
• move @types/node into dependencies because the published declarations also expose Node built-in server/request types
• update bun.lock accordingly

Verification

• Reproduced the current published package failure in a clean consumer project with only typescript, hono, and @hono/node-server@2.0.3 installed:
  • npx tsc -p tsconfig.json reports TS2307: Cannot find module 'ws' or its corresponding type declarations, plus missing Node type declarations.
• Packed this branch locally and installed it into a clean consumer project with only typescript, hono, and the local @hono/node-server tarball installed:
  • npx tsc -p tsconfig.json passes.
• bun run build passes, including publint.
• git diff --check passes.

Note: I also tried bun test --run, but the local full suite fails/hangs in unrelated Bun runtime HTTP/WebSocket cases on this machine (for example readWithoutBlocking > should return the body for large text and several abort/WebSocket timeout cases). The packaging/type-surface repro above is scoped to this issue.

I used an AI coding assistant to prepare this patch.

Fixes #353

[alex-kinokon]

Don’t think it’s a great idea to pin the Node.js version in a direct dependency.

[yusukebe]

This PR is not needed since #359 has been merged.