Allow compliance testing of implementations

It would be good if we can offer an easy way for people to integration test that their implementations are working correctly.

I'd propose to add a test suite and a GitHub action to this repository that allows implementations to easily verify whether they are compliant.

Concretely, I am thinking of specifying a simple stdin/stdout protocol where the implementations need to provide an application that reads from stdin (each line representing a test case), exiting with an appropriate exit code.

For example:

/path/to/implementation parse-valid-str
> /ip4/127.0.0.1/tcp/1234
< exit 0
/path/to/implementation parse-invalid-str
> /foobar/1234
< exit 0
/path/to/implementation parse-valid-hex
> 047f000001910204d2
> exit 0

By providing a GitHub action, we can make sure that changes to the table (as long as accompanied with a test) are run against new implementations (assuming they run their CI regularly).

Thoughts?

Start by reviewing the repository's existing compliance table and test layout, then clarify the proposed stdin/stdout protocol and how implementations would be invoked. Done means an agreed protocol, a compliance test suite, and a GitHub Action that runs it against implementations.