AwsIotMqttConnectionConfigBuilder with `verify_peer` option

[unematiii]

I noticed that builder API for web-sockets allows you to pass in TlsContextOptions, verify_peer among them, but there is no such options for mTLS, forcing me to patch the package so I could use library locally with custom broker and self-signed certificates.

Would it be possible to expose verify_peer (and maybe other options that make sense) to mTLS config builder as well?

[jmklix]

Thanks for tanking the time to make a suggestion to improve this sdk! This is something that we might add in the future, but it is currently not a high priority. Leaving this open. Please 👍 if you would like this feature added