Docs Freshness Check GH Action

[tr0njavolta]

Creates a GH action to find and return docs that have not been touched for 6 months and creates an Issue with the output. Runs once a month.

Cannot fully test in my fork because it doesn't have an Issues tab.

[netlify]

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Lighthouse	1 paths audited Performance: 80 (🟢 up 6 from production) Accessibility: 90 (🔴 down 2 from production) Best Practices: 83 (no change from production) SEO: 100 (no change from production) PWA: 70 (no change from production) View the detailed breakdown and full score reports

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