Allow controlling options lifetime from the composition root

[Carl-Hugo]

Create .Net plain options injection helpers that support the following:

• AddTransientOptions<TOptions>()
• AddScopedOptions<TOptions>()
• AddSingletonOptions<TOptions>()

Conditional options injection should be supported.

Implementation example:

public static class OptionsBuilderExtensions
{
    public static OptionsBuilder<TOptions> AddScopedOptions<TOptions>(this IServiceCollection services)
            where TOptions : class
    {
        services.AddScoped(serviceProvider => serviceProvider
            .GetService<IOptionsSnapshot<TOptions>>().Value);
        return services.AddOptions<TOptions>();
    }
}

Registration example:

services.AddScopedOptions<Options>()
    .Configure(o => o.MyImportantProperty = "Some important value");

That should allow injection the options directly, controlling the lifetime from the composition root instead of from the consumer, like the following:

public class Consumer
{
    private readonly Options _options;
    public Consumer(Options options)
    {
        _options = options ?? throw new ArgumentNullException(nameof(options));
    }
}