feat: Add example showcasing Prisma ORM with Turso database

[ludralph]

• Set up Prisma with Turso using @prisma/adapter-libsql and @libsql/client
• Implement CRUD operations on the User and Post models
• Configure TypeScript and environment variables for database connection
• Provide a script (script.ts) demonstrating Prisma Client queries

This example demonstrates how to integrate Prisma ORM with Turso, a distributed edge database based on libSQL.

[jharrell]

Let's rename this example to just turso.