restore direct access to src for unified reactivity

[piraz]

Summary:

This release fixes a critical regression introduced in v0.5.1 where strict encapsulation through the exports field blocked direct access to the
./src directory. Downstream libraries like faz-bootstrap rely on importing directly from faz/src to ensure a single, unified instance of SolidJS
across the entire component ecosystem, preventing reactivity fragmentation.

Key Changes:

• Restored Source Access: Explicitly exposed ./src/index.ts and all files under ./src/* in the package.json exports mapping.
• Compilation Fix: Resolves "Path not exported" errors encountered during the build process of dependent projects (e.g., using esbuild or vite)
• Consistency: Restores the flexible import behavior available in v0.4.3 while maintaining the benefits of modern subpath exports for the
  distribution bundle.