feat: Remove package-lock.json from examples

[nvh95]

Chores

• Examples should not contain package-lock.json (follow NextJS's practice)
  • TODO: Learn some practice from Next.js examples and add to docs when docs is ready feat: Add docs using docusaurus #59 . Also, add it to CONTRIBUTING.md Missing CONTRIBUTING.md #26
• Remove vite-react and create-react-app's lock files

[thanhsonng]

@nvh95 can you elaborate on this practice? Why shouldn't package-lock.json be included?

[nvh95]

@thanhsonng

1. It bloats the size of PRs which are adding examples. That makes that information useless.

2. Since all examples contain the jest-preview as a dependency, and dependencies of jest-preview change frequently, so all package-lock.json inside examples need to be updated accordingly. That's cumbersome.

3. Examples' dependencies should always be "newest", to early detect and prevent the incompatible with Jest Preview. So we opt-out locking versions by removing package-lock.json.

4. I just learn from NextJS's examples (https://github.com/vercel/next.js/tree/canary/examples)