feat: add marketplace metrics, privacy features, and service registry endpoints

- Add Prometheus metrics for marketplace API throughput and error rates with new dashboard panels
- Implement confidential transaction models with encryption support and access control
- Add key management system with registration, rotation, and audit logging
- Create services and registry routers for service discovery and management
- Integrate ZK proof generation for privacy-preserving receipts
- Add metrics instru

enterprise-connectors/python-sdk/aitbc_enterprise/__init__.py

@@ -0,0 +1,30 @@
+"""
+AITBC Enterprise Connectors SDK
+
+Python SDK for integrating AITBC with enterprise systems including
+payment processors, ERP systems, and other business applications.
+"""
+
+__version__ = "1.0.0"
+__author__ = "AITBC Team"
+
+from .core import AITBCClient, ConnectorConfig
+from .base import BaseConnector
+from .exceptions import (
+    AITBCError,
+    AuthenticationError,
+    RateLimitError,
+    APIError,
+    ConfigurationError
+)
+
+__all__ = [
+    "AITBCClient",
+    "ConnectorConfig",
+    "BaseConnector",
+    "AITBCError",
+    "AuthenticationError",
+    "RateLimitError",
+    "APIError",
+    "ConfigurationError",
+]