refactor: upgrade project setup

[sxzz]

• Replace Yarn with pnpm
• Replace Jest with Vitest
• Replace Webpack with Vite
• Replace CircleCI with GitHub Actions
• Use both Prettier & ESLint
  • ESLint config is from Vite (partially)
• Upgrade all deps
• Use tsup to build packages

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TODO: /cc @yyx990803

• remove CircleCI integration
• add NPM_TOKEN to Actions secrets
  https://github.com/sxzz/babel-plugin-jsx/blob/refactor/.github/workflows/release.yml#L40

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[yyx990803]

I've stopped the Circle CI build.

There is an error logged to stderr from index.test.tsx but the test is passing - I assume it's not related to test logic?

[sxzz]

@yyx990803 Fixed, not related to test logic.