Python: [BREAKING] Replace Hosted*Tool classes with tool methods (#3634)

* Replace Hosted*Tool classes with client static factory methods

* fixed failing test

* mypy fix

* mypy fix 2

* declarative mypy fix

* addressed comments

* ToolProtocol removal

* fixed test

* agents mypy fix

* fix failing tests

* mypy fix

* addressed comments

* fixed tests

* addressed comments + added factory method overrides for azureai v2 client

* mypy fix

* added kwargs to azureai tool methods

* fixed in test

* _sessions fix

* test fix

python/samples/semantic-kernel-migration/azure_ai_agent/02_azure_ai_agent_with_code_interpreter.py

@@ -39,18 +39,24 @@ async def run_semantic_kernel() -> None:
 
 
 async def run_agent_framework() -> None:
-    from agent_framework.azure import AzureAIAgentClient, HostedCodeInterpreterTool
+    from agent_framework.azure import AzureAIAgentClient, AzureAIAgentsProvider
     from azure.identity.aio import AzureCliCredential
 
     async with (
         AzureCliCredential() as credential,
-        AzureAIAgentClient(credential=credential).as_agent(
+        AzureAIAgentsProvider(credential=credential) as provider,
+    ):
+        # Create a client to access hosted tool factory methods
+        client = AzureAIAgentClient(agents_client=provider._agents_client)
+        code_interpreter_tool = client.get_code_interpreter_tool()
+
+        agent = await provider.create_agent(
             name="Analyst",
             instructions="Use the code interpreter for numeric work.",
-            tools=[HostedCodeInterpreterTool()],
-        ) as agent,
-    ):
-        # HostedCodeInterpreterTool mirrors the built-in Azure AI capability.
+            tools=[code_interpreter_tool],
+        )
+
+        # Code interpreter tool mirrors the built-in Azure AI capability.
         reply = await agent.run(
             "Use Python to compute 42 ** 2 and explain the result.",
             tool_choice="auto",