feat(shared): add error handling & structured logging strategy

- Global exception filter with consistent error response format
- Domain exceptions (NotFoundException, ValidationException, etc.)
- Error codes enum for domain-specific error identification
- Correlation ID middleware for request tracing
- Request/response logging middleware with structured JSON
- PII masking in logs (emails, phone numbers, sensitive fields)
- Enhanced LoggerService with pino formatters and ISO timestamps
- Tests for exception filter, domain exceptions, and PII masker

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/modules/shared/infrastructure/index.ts

@@ -2,3 +2,7 @@ export { PrismaService } from './prisma.service';
 export { RedisService } from './redis.service';
 export { LoggerService } from './logger.service';
 export { EventBusService } from './event-bus.service';
+export { GlobalExceptionFilter } from './filters/global-exception.filter';
+export { CorrelationIdMiddleware } from './middleware/correlation-id.middleware';
+export { RequestLoggingMiddleware } from './middleware/request-logging.middleware';
+export { maskPii } from './pii-masker';