chore(sdk): Create Astro Example for UVE

[zJaaal]

Proposed changes

1. Add new Astro project under examples folder
2. Install necessary dependencies to make it work as the other examples (Tailwind and Vercel plugin)
3. Add env file
4. Install client and react SDKs
5. Create React components to interop Astro with the React SDK
6. Clean the project by creating types and centralizing logic

Screenshot

https://github.com/user-attachments/assets/4d5f151e-169d-4bfa-b62d-b2447fe84f23