Python: added ChatClientBase with function calling (#147)

* added ChatClientBase with function calling

* streaming update

* fixed typing

* test setup

* small update

* src setup

* removed src, updated test naming

* fixed test command

* alolow args

* updated test run

* added unit test folder to azure

* added init and unit test to azure

* added other cross tests

* restructured

* reset test run

* fix name

* removed always

* updated test

* extend pytest.xml locations

* run surface always

* added decorators for FC and marked tests

* fixed mypy settings and added tests

* fix override import

* removed import

python/packages/openai/agent_framework/openai/version.py

@@ -0,0 +1,10 @@
+# Copyright (c) Microsoft. All rights reserved.
+
+import importlib.metadata
+
+try:
+    __version__ = importlib.metadata.version(__name__)
+except importlib.metadata.PackageNotFoundError:
+    __version__ = "0.0.0"  # Fallback for development mode
+
+__all__ = ["__version__"]