Add support for setting the TLS configuration name from client connectors in WebSockets Next

[emattheis]

This PR adds a tlsConfigurationName(String) method to the client connector interfaces, making it possible to specify the TLS configuration at runtime.

While writing the tests, I also discovered a bug causing the connector to hang indefinitely on connectAndAwait() when a TLS configuration cannot be found. I added appropriate error handling to ensure the underlying exception gets emitted instead of being swallowed by Vert.x, and some test coverage.

[quarkus-bot]

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[quarkus-bot]

Status for workflow Quarkus Documentation CI

This is the status report for running Quarkus Documentation CI on commit 8e9cff4.

✅ The latest workflow run for the pull request has completed successfully.

It should be safe to merge provided you have a look at the other checks in the summary.

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🙈 The PR is closed and the preview is expired.

[mkouba]

That's a very nice contribution. Thanks @emattheis!