feat: add initial TypeScript and ESLint configurations for library and React applications

- Created TypeScript configuration files for library and React applications.
- Added ESLint configurations for library, React, and Storybook.
- Implemented a basic Button component in the UI package.
- Set up Vite for the docs development environment.

packages/ui/src/components/index.ts

@@ -2,3 +2,4 @@ export * from './header';
 export * from './counter';
 export * from './date-example';
 export * from './encryption-demo';
+export * from './button';