🐛 Issue: Icons don’t support auto-import and autocomplete

#### Description

When using `remixicon-react`, icons don’t show up with autocomplete / IntelliSense in editors like VS Code. Unlike libraries such as **lucide-react** or **@heroicons/react**, I have to manually import each icon:

```tsx
import Home2FillIcon from "remixicon-react/Home2FillIcon";
```

It would be much smoother if the package supported **auto-import** and **editor autocomplete**, so I could just type `` and have the IDE suggest it / auto-import it.

---

#### Expected Behavior

* Typing `

Start by reviewing the package's current icon exports and the proposed single entrypoint or index.d.ts approach. Check how VS Code handles the exported components in JSX, then verify that typing an icon name offers autocomplete and inserts the correct import. Done means icons such as Home2FillIcon are discoverable and auto-importable without manual deep imports.

Written by the indexing model from the issue text.