Update CodeRabbit to ignore testing files

[shawn-hurley]

Code rabbit reviews can get verbose and are not helpful when reviewing testing files meant to be wrong or incomplete.

Restricting code rabbit to only look at .core I think will alleviate many of these issues.

[github-actions]

This issue has been automatically marked as stale because it has not had any activity for 60 days.
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[github-actions]

This issue has been automatically marked as stale because it has not had any activity for 60 days.
It will remain open for visibility and reporting purposes.
Please comment if this issue is still relevant.

[github-actions]

This issue has been automatically marked as stale because it has not had any activity for 60 days.
It will remain open for visibility and reporting purposes.
Please comment if this issue is still relevant.