Add alternative React component snippets without `import React` for new JSX transform

[RahulAswal01]

Since React 17+, the new JSX transform allows JSX to be used without importing React,
so many React 17+ projects no longer require import React from 'react'.

Currently, all functional and arrow component snippets (rfc, rfce, rafc, rafce, etc.)
inject React imports via shared snippet logic, and there is no variant that omits this.

I checked src/sourceSnippets/components.ts and confirmed that all component snippets
include ...react (or related shared imports), so modern React users always get
import React from 'react'.

Would you be open to adding alternative snippet variants (for example rfcx, rafcex)
that generate components without the React import, while keeping existing snippets
unchanged for backward compatibility?