Service Data Initializer

ProductController
	response = new ServiceResponse<List<Product>>()
	{ 
       // returns products implicitly from List<Product>
       // ( similar to a callback function)
       // i.e. - res(prodcuts) => use products 
    	Data = products
    }

**** see builder for configureing ServiceResponse
# Program.cs
/** replaces createHostBuilder and all that */
var builder = WebApplication.CreateBuilder(args);
var app = builder.Build()

/** Configure -previously done in startup.cs */
builder.Services.AddScoped<ITodoRepository, TodoRepository>();