Add lightweight YAML example to init

[andrewvc]

Now that we support lightweight monitors we should show folks how it's done. This is needed to better support docs for the current 8.5 release and an upcoming blog post.

[apmmachine]

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• Start Time: 2022-11-29T09:41:29.982+0000

• Duration: 14 min 51 sec

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Total	205

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