Cloud-Terrastodon

Apply the repo-preferred Arbitrary patterns in cloud-terrastodon. Use this for derive vs #[arbitrary(default)] vs newtype vs manual impl decisions, and for converting brittle tests to arbitrary-sample-plus-targeted-mutation patterns.

Add support for a new Azure resource in cloud-terrastodon. Use when creating Azure resource newtypes, typed resource/id/name models, naming-rule validation, Resource Graph list requests, Azure CLI list/show commands, scope plumbing, outage/discovery matching, and repo-standard validation with .\\check-all.ps1.