Python: added user agents to foundry and azure openai (#658)

* added user agents to foundry and azure openai

* improvement

* improvement for disabled setup

python/packages/azure/agent_framework_azure/_shared.py

@@ -9,7 +9,7 @@ from typing import Any, ClassVar, Final
 from agent_framework._pydantic import AFBaseSettings, HTTPsUrl
 from agent_framework.exceptions import ServiceInitializationError
 from agent_framework.openai._shared import OpenAIBase
-from agent_framework.telemetry import USER_AGENT_KEY
+from agent_framework.telemetry import APP_INFO, USER_AGENT_KEY, prepend_agent_framework_to_user_agent
 from azure.core.credentials import TokenCredential
 from openai.lib.azure import AsyncAzureOpenAI
 from pydantic import ConfigDict, SecretStr, model_validator, validate_call
@@ -212,7 +212,9 @@ class AzureOpenAIConfigMixin(OpenAIBase):
         """
         # Merge APP_INFO into the headers if it exists
         merged_headers = dict(copy(default_headers)) if default_headers else {}
-
+        if APP_INFO:
+            merged_headers.update(APP_INFO)
+            merged_headers = prepend_agent_framework_to_user_agent(merged_headers)
         if not client:
             # If the client is None, the api_key is none, the ad_token is none, and the ad_token_provider is none,
             # then we will attempt to get the ad_token using the default endpoint specified in the Azure OpenAI