Initial commit: SDI SaaS Platform foundation

- Complete monorepo structure with pnpm workspaces
- Prisma database schema with 20+ entities
- NestJS API with 9 core modules
- BullMQ orchestration worker
- AWS and Azure provider adapters
- Docker Compose infrastructure
- Complete documentation

packages/database/src/index.ts

@@ -0,0 +1,2 @@
+export { PrismaClient } from '@prisma/client';
+export * from '@prisma/client';