Update Template Program.cs (CommunityToolkit#373)

Update the DataSyncServer template with, replacing `AddDatasyncControllers` with `AddDatasyncServices` and `AddControllers`, to better follow framework api

Author: AndresH18

templates/Template.DatasyncServer/Program.cs

@@ -6,7 +6,8 @@
 var connectionString = builder.Configuration.GetConnectionString("DefaultConnection");
 
 builder.Services.AddDbContext<AppDbContext>(options => options.UseSqlServer(connectionString));
-builder.Services.AddDatasyncControllers();
+builder.Services.AddDatasyncServices();
+builder.Services.AddControllers();
 
 var app = builder.Build();
 
@@ -19,4 +20,4 @@
 
 // Configure and run the web service.
 app.MapControllers();
-app.Run();
+app.Run();