Pass serviceprovider when configuring certificates

[wootapa]

It would help if you could pass the serviceprovider when calling configureClientCertificate here: https://github.com/ActiveLogin/ActiveLogin.Authentication/blob/aafc9ce5123cca7331a2064938c824aa31513f2f/src/ActiveLogin.Authentication.BankId.Core/IBankIdBuilderExtensions.cs#L40-L51

We can then resolve our own services to provide a certificate

opts.UseClientCertificate(sp =>
{
    var file = await sp.GetRequiredService<MyService>().GetFile("path");
    return new X509Certificate2(file, "password");
});