chore: import upstream snapshot with attribution

dotnet/samples/Demos/StepwisePlannerMigration/Program.cs

@@ -0,0 +1,44 @@
+// Copyright (c) Microsoft. All rights reserved.
+
+using System.IO;
+using Microsoft.AspNetCore.Builder;
+using Microsoft.Extensions.Configuration;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Logging;
+using Microsoft.SemanticKernel;
+using Microsoft.SemanticKernel.Planning;
+using StepwisePlannerMigration.Extensions;
+using StepwisePlannerMigration.Options;
+using StepwisePlannerMigration.Services;
+
+var builder = WebApplication.CreateBuilder(args);
+
+// Get configuration
+var config = new ConfigurationBuilder()
+    .SetBasePath(Directory.GetCurrentDirectory())
+    .AddJsonFile("appsettings.json")
+    .AddJsonFile("appsettings.Development.json", true)
+    .AddUserSecrets<Program>()
+    .Build();
+
+var openAIOptions = config.GetValid<OpenAIOptions>(OpenAIOptions.SectionName);
+
+// Add services to the container.
+builder.Services.AddControllers();
+builder.Services.AddLogging(loggingBuilder => loggingBuilder.AddConsole());
+builder.Services.AddTransient<IPlanProvider, PlanProvider>();
+
+// Add Semantic Kernel
+builder.Services.AddKernel();
+builder.Services.AddOpenAIChatCompletion(openAIOptions.ChatModelId, openAIOptions.ApiKey);
+
+builder.Services.AddTransient<FunctionCallingStepwisePlanner>();
+
+var app = builder.Build();
+
+app.UseHttpsRedirection();
+app.UseAuthorization();
+
+app.MapControllers();
+
+app.Run();