Fix some issues with Native AOT (#130)

* Fix some issues with Native AOT

- An anonymous type was being used in McpClient for the initialize result message. Switched to use the type for that purpose that already existed.
- A bunch of the request params / result types were not in the source context or referenced from types that were or from custom converters. Added all the request/result types to the context.
- Improved the warning message for WithTools.

tests/ModelContextProtocol.Tests/Server/McpServerToolTests.cs

@@ -1,5 +1,4 @@
-using Microsoft.Extensions.AI;
-using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection;
 using ModelContextProtocol.Protocol.Types;
 using ModelContextProtocol.Server;
 using Moq;

tests/ModelContextProtocol.Tests/Utils/InMemoryTestSseServer.cs

@@ -4,6 +4,7 @@ using System.Text.Json;
 using ModelContextProtocol.Protocol.Messages;
 using Microsoft.Extensions.Logging;
 using Microsoft.Extensions.Logging.Abstractions;
+using ModelContextProtocol.Protocol.Types;
 
 namespace ModelContextProtocol.Tests.Utils;
 
@@ -288,19 +289,14 @@ public sealed class InMemoryTestSseServer : IAsyncDisposable
         var jsonRpcResponse = new JsonRpcResponse()
         {
             Id = jsonRpcRequest.Id,
-            Result = new
+            Result = new InitializeResult()
             {
-                protocolVersion = "2024-11-05",
-                capabilities = new
+                ProtocolVersion = "2024-11-05",
+                Capabilities = new(),
+                ServerInfo = new()
                 {
-                    experimental = (object?)null,
-                    roots = (object?)null,
-                    sampling = (object?)null
-                },
-                serverInfo = new
-                {
-                    name = "ExampleServer",
-                    version = "1.0.0"
+                    Name = "ExampleServer",
+                    Version = "1.0.0"
                 }
             }
         };