Add 18 Chat Modes#53

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PlagueHO wants to merge 10 commits intogithub:mainfrom

PlagueHO:main

Commits on Jul 7, 2025

Add prompts for .NET best practices, design pattern review, GitHub Copilot suggestions, and various update tasks
PlagueHO
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Merge branch 'main' of https://github.com/github/awesome-copilot
PlagueHO
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