Create codeql.yml

[Archmonger]

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Description

A summary of the changes.

Checklist:

Please update this checklist as you complete each item:

• [ ] Tests have been included for all bug fixes or added functionality.
• [ ] The changelog has been updated with any significant changes, if necessary.
• [ ] GitHub Issues which may be closed by this PR have been linked.

[github-advanced-security[bot]]

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