[Feature]: Implement the `NATTraversalReportInternal` protocol

[jonbarrow]

Checked Existing

• I have checked the repository for duplicate issues.

What feature do you want to see added?

An implementation of the NATTraversalReportInternal protocol.

Why do you want to have this feature?

Not used by NEX, but is provided by Rendez-Vous. Will be useful to people making non-NEX game servers. Also makes the library more feature complete.

Any other details to share? (OPTIONAL)

This is an internal protocol.

Documentation link: https://nintendo-wiki.pretendo.network/docs/nex/protocols/nat-traversal-report-internal

[DaniElectra]

Do we really need to implement internal protocols?

[jonbarrow]

We don't need any of the 31 protocols in the current set of issues. They're there just for the sake of completion. Do we have reason not to?