chore: import upstream snapshot with attribution

dotnet/tests/Microsoft.Agents.AI.Foundry.UnitTests/TestData/AgentResponse.json

@@ -0,0 +1,17 @@
+{
+  "object": "agent",
+  "id": "agent_abc123",
+  "name": "agent_abc123",
+  "versions": {
+    "latest": {
+      "metadata": {},
+      "object": "agent.version",
+      "id": "agent_abc123:1",
+      "name": "agent_abc123",
+      "version": "1",
+      "description": "",
+      "created_at": 1761771936,
+      "definition": "agent-definition-placeholder"
+    }
+  }
+}

dotnet/tests/Microsoft.Agents.AI.Foundry.UnitTests/TestData/AgentVersionResponse.json

@@ -0,0 +1,9 @@
+{
+  "object": "agent.version",
+  "id": "agent_abc123:1",
+  "name": "agent_abc123",
+  "version": "1",
+  "description": "",
+  "created_at": 1761771936,
+  "definition": "agent-definition-placeholder"
+}

dotnet/tests/Microsoft.Agents.AI.Foundry.UnitTests/TestData/OpenAIDefaultResponse.json

@@ -0,0 +1,68 @@
+{
+  "id": "resp_0888a46cbf2b1ff3006914596e05d08195a77c3f5187b769a7",
+  "object": "response",
+  "created_at": 1762941294,
+  "status": "completed",
+  "background": false,
+  "billing": {
+    "payer": "developer"
+  },
+  "error": null,
+  "incomplete_details": null,
+  "instructions": null,
+  "max_output_tokens": null,
+  "max_tool_calls": null,
+  "model": "gpt-4o-mini-2024-07-18",
+  "output": [
+    {
+      "id": "msg_0888a46cbf2b1ff3006914596f814481958e8cf500a6dabbec",
+      "type": "message",
+      "status": "completed",
+      "content": [
+        {
+          "type": "output_text",
+          "annotations": [],
+          "logprobs": [],
+          "text": "Hello! How can I assist you today?"
+        }
+      ],
+      "role": "assistant"
+    }
+  ],
+  "parallel_tool_calls": true,
+  "previous_response_id": null,
+  "prompt_cache_key": null,
+  "prompt_cache_retention": null,
+  "reasoning": {
+    "effort": null,
+    "summary": null
+  },
+  "safety_identifier": null,
+  "service_tier": "default",
+  "store": true,
+  "temperature": 1.0,
+  "text": {
+    "format": {
+      "type": "text"
+    },
+    "verbosity": "medium"
+  },
+  "tool_choice": "auto",
+  "tools": [],
+  "top_logprobs": 0,
+  "top_p": 1.0,
+  "truncation": "disabled",
+  "usage": {
+    "input_tokens": 9,
+    "input_tokens_details": {
+      "cached_tokens": 0
+    },
+    "output_tokens": 10,
+    "output_tokens_details": {
+      "reasoning_tokens": 0
+    },
+    "total_tokens": 19
+  },
+  "user": null,
+  "metadata": {}
+}