Python: Azure Responses client (#311)

* Azure Responses client

* Fix a change made in the wrong place

* allow api_version and token_endpoint to use env vars

* Add getting started sample

* add responses deployment name env var

* update azure clients to use defaults for api_version and token_endpoint

* make tests more reliable

---------

Co-authored-by: Chris <66376200+crickman@users.noreply.github.com>

python/packages/main/agent_framework/azure/__init__.py

@@ -9,6 +9,7 @@ _IMPORTS = [
     "AzureAssistantsClient",
     "AzureChatClient",
     "AzureOpenAISettings",
+    "AzureResponsesClient",
     "get_entra_auth_token",
     "__version__",
 ]

python/packages/main/agent_framework/azure/__init__.pyi

@@ -4,6 +4,7 @@ from agent_framework_azure import (
     AzureAssistantsClient,
     AzureChatClient,
     AzureOpenAISettings,
+    AzureResponsesClient,
     __version__,
     get_entra_auth_token,
 )
@@ -12,6 +13,7 @@ __all__ = [
     "AzureAssistantsClient",
     "AzureChatClient",
     "AzureOpenAISettings",
+    "AzureResponsesClient",
     "__version__",
     "get_entra_auth_token",
 ]