Expose agent deployment exceptions via public API and fix example import (#72)

Author: DhiaShams

examples/agent_wait_until_ready.py

@@ -5,8 +5,7 @@
 an agent to finish deploying before using it.
 """
 
-from gradient import Gradient
-from gradient._exceptions import AgentDeploymentError, AgentDeploymentTimeoutError
+from gradient import Gradient, AgentDeploymentError, AgentDeploymentTimeoutError
 
 # Initialize the Gradient client
 client = Gradient()

src/gradient/__init__.py

@@ -61,6 +61,8 @@
     "APITimeoutError",
     "APIConnectionError",
     "APIResponseValidationError",
+    "AgentDeploymentError",
+    "AgentDeploymentTimeoutError",
     "BadRequestError",
     "AuthenticationError",
     "PermissionDeniedError",