Adding unset attribute rule

[aireilly]

Adds a new AsciiDoc rule that highlights when an attribute is not unset in the same file.

The rule fires for an attribute that is not unset in the file.

[github-actions]

Click here to review and test in web IDE:

[github-actions]

🎊 Navigate the preview: https://redhat-documentation-vale-at-red-hat-729.surge.sh 🎊

[aireilly]

This rule does not account for specific ifeval situations.

ifeval::["{context}" == "build-strategies-docker"]
:dockerstrategy:
endif::[]

<module text>

ifeval::["{context}" == "build-strategies-docker"]
:!dockerstrategy:
endif::[]

Update the rule to respect ifeval boundaries. For example, how can we validate this? https://github.com/aireilly/openshift-docs/blob/add-symlinks-to-codeowners/modules/cco-ccoctl-configuring.adoc?plain=1

[aireilly]

This rule does not account for specific ifeval situations.

ifeval::["{context}" == "build-strategies-docker"]
:dockerstrategy:
endif::[]

<module text>

ifeval::["{context}" == "build-strategies-docker"]
:!dockerstrategy:
endif::[]

Update the rule to respect ifeval boundaries. For example, how can we validate this? https://github.com/aireilly/openshift-docs/blob/add-symlinks-to-codeowners/modules/cco-ccoctl-configuring.adoc?plain=1

Hacked around this by just counting set and unset attributes

[jeana-redhat]

/cc

[aireilly]

/cc

What does this mean?

[aireilly]

@jeana-redhat Given upcoming tooling changes, I don't think I will be able to spend more time getting this into a better state for AsciiDoc, this will have to do.

[jeana-redhat]

/cc

What does this mean?

well, in other repos, it seems to mark you as a reviewer. I was planning to come back around on this 😅

[aireilly]

Merging this since it's reasonably useful and we're moving off AsciiDoc so why not? 🤷