Add tools parameter to agent creation in synchronous and asynchronous samples

Author: RobiladK

samples/microsoft/csharp/getting-started-agents/AdditionalMessage.md

@@ -23,8 +23,8 @@ Synchronous sample:
 PersistentAgent agent = client.Administration.CreateAgent(
     model: modelDeploymentName,
     name: "Math Tutor",
-    instructions: "You are a personal electronics tutor. Write and run code to answer questions."
-);
+    instructions: "You are a personal electronics tutor. Write and run code to answer questions.",
+    tools: [new CodeInterpreterToolDefinition()]);
 ```
 
 Asynchronous sample:

samples/microsoft/csharp/getting-started-agents/AdditionalMessageSync.cs

@@ -14,8 +14,8 @@
 PersistentAgent agent = await client.Administration.CreateAgentAsync(
     model: modelDeploymentName,
     name: "Math Tutor",
-    instructions: "You are a personal electronics tutor. Write and run code to answer questions."
-);
+    instructions: "You are a personal electronics tutor. Write and run code to answer questions.",
+    tools: [new CodeInterpreterToolDefinition()]);
 
 PersistentAgentThread thread = await client.Threads.CreateThreadAsync();