chore: update @prisma/client to version 7.10.0 and add prisma.config.ts for configuration management

- Updated @prisma/client in shared package.json from ^6.0.0 to ^7.10.0.
- Modified stack.md to include generated Prisma client directory and Prisma CLI config file.
- Added prisma.config.ts for managing Prisma configuration, including datasource URL and migrations path.

stack.md

@@ -48,7 +48,9 @@ gruperly/
 │   │   │   │   └── waitlist.ts
 │   │   │   └── index.ts         # Entry point de la API
 │   │   ├── prisma/
-│   │   │   └── schema.prisma    # Definición del modelo de datos
+│   │   │   ├── schema.prisma    # Definición del modelo de datos
+│   │   │   └── generated/       # Cliente generado de Prisma (gitignoreado)
+│   │   ├── prisma.config.ts     # Config de Prisma CLI (datasource URL, migrations)
 │   │   ├── tsconfig.json
 │   │   └── package.json
 │   │