Add an example Ipv6 Probe

[aidanharris]

Fixes #93

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• [x] I have read the contributing guideline and understand that I have made the correct modifications

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Description:

This adds an example Ipv6 probe

How Has This Been Tested?

This was tested on a host with Ipv6 connectivity running the container with --net=host

[LinuxServer-CI]

I am a bot, here are the test results for this PR: https://ci-tests.linuxserver.io/lspipepr/smokeping/9e30fdd7-pkg-9e30fdd7-pr-105/index.html https://ci-tests.linuxserver.io/lspipepr/smokeping/9e30fdd7-pkg-9e30fdd7-pr-105/shellcheck-result.xml