Support iOS anonymous calls

[josh-burton]

Is your proposal related to a problem?

Support iOS anonymous calls, so the call does not show up in the recent phone calls of the device

Describe the solution you'd like

a configuration option to allow anonymous calls

Describe alternatives you've considered

Additional context

This can be set via:

        configuration.includesCallsInRecents = false

[cybex-dev]

Hi @josh-burton,

I love the suggestion - I can add that as a platform unique feature but at present Android does not seem to support that with the current system-managed connection service.

If in future, this feature or self-managed connection service features become more requested, I'll implement such a service to support these features and more.

#188