Support for client certificates in ClientCredentialsTokenManagement

[JotaCe14]

Which version of Duende.AccessTokenManagement are you using?

3.0.1

Which version of .NET are you using?

8.0

Describe the bug

I need to send a client certificate in my requests to get access tokens.

To Reproduce

Add AddClientCredentialsTokenManagement to services.
Add AddClient to ClientCredentialsTokenManagementBuilder.
Try to add a client certificate to the client.

Expected behavior

I'd like to have an option to add a client certificate to the access token clients similar to:

var handler = new HttpClientHandler();
var certificate = GetCertificate();
handler.ClientCertificates.Add(certificate)
var client = new HttpClient(handler);