Add database migrations

[gotryit]

public static class Extensions
{
    public static IWebHost MigrateDatabase(this IWebHost webHost)
    {
        // Manually run any pending migrations if configured to do so.
        var env = Environment.GetEnvironmentVariable("ASPNETCORE_ENVIRONMENT");

        if (env == "Production")
        {
            var serviceScopeFactory = (IServiceScopeFactory)webHost.Services.GetService(typeof(IServiceScopeFactory));

            using (var scope = serviceScopeFactory.CreateScope())
            {
                var services = scope.ServiceProvider;
                var dbContext = services.GetRequiredService<ApplicationDbContext>();

                dbContext.Database.Migrate();
            }
        }

        return webHost;
    }
}

public static void Main(string[] args)
{
    BuildWebHost(args)
        .MigrateDatabase()
        .Run();
}