Issue #46: implement Python async client values errors and CLI

clients/python/src/mxgateway/__init__.py

@@ -1,5 +1,38 @@
 """MXAccess Gateway Python client package."""
 
+from .auth import ApiKey, auth_metadata
+from .client import GatewayClient
+from .errors import (
+    MxAccessError,
+    MxGatewayAuthenticationError,
+    MxGatewayAuthorizationError,
+    MxGatewayCommandError,
+    MxGatewayError,
+    MxGatewaySessionError,
+    MxGatewayTransportError,
+    MxGatewayWorkerError,
+)
+from .options import ClientOptions
+from .session import Session
+from .values import MxValueView, from_mx_value, to_mx_value
 from .version import __version__
 
-__all__ = ["__version__"]
+__all__ = [
+    "ApiKey",
+    "ClientOptions",
+    "GatewayClient",
+    "MxAccessError",
+    "MxGatewayAuthenticationError",
+    "MxGatewayAuthorizationError",
+    "MxGatewayCommandError",
+    "MxGatewayError",
+    "MxGatewaySessionError",
+    "MxGatewayTransportError",
+    "MxGatewayWorkerError",
+    "MxValueView",
+    "Session",
+    "__version__",
+    "auth_metadata",
+    "from_mx_value",
+    "to_mx_value",
+]