feat: add Vite library build config with dts generation

Separate vite.lib.config.ts for library mode builds:
- ES module output (index.es.js) with react/react-dom externalized
- Consolidated type declarations via rollupTypes (index.es.d.ts)
- CSS Modules with debuggable scoped names (cameleer_ prefix)
- Deterministic output filenames (style.css, index.es.js)

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

tsconfig.node.json

@@ -20,5 +20,5 @@
     "noFallthroughCasesInSwitch": true,
     "noUncheckedSideEffectImports": true
   },
-  "include": ["vite.config.ts"]
+  "include": ["vite.config.ts", "vite.lib.config.ts"]
 }