feat: add parapharmacy API with MongoDB and N8N setup

- Create parapharmacy-api microservice with Express + Swagger + MongoDB
- Add product model with full-text search and deduplication
- Add CRUD endpoints and bulk upsert for scrapers
- Update docker-compose.yml with MongoDB, N8N, and parapharmacy-api services
- Add proxy endpoints in FarmaFinder backend for parapharmacy
- Update frontend services to use parapharmacy API
- Add Swagger documentation at /api/docs

apps/parapharmacy-api/.env.example

@@ -0,0 +1,13 @@
+# Parapharmacy API Configuration
+PORT=3002
+NODE_ENV=development
+
+# MongoDB
+MONGODB_URI=mongodb://localhost:27017/parapharmacy
+
+# CORS
+CORS_ORIGIN=http://localhost:3000
+
+# Rate Limiting
+RATE_LIMIT_WINDOW_MS=60000
+RATE_LIMIT_MAX=100