✨ Set up Copilot instructions

[gkorland]

Configure instructions for this repository as documented in Best practices for Copilot coding agent in your repository.

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This repo is using Opire - what does it mean? 👇

💵 Everyone can add rewards for this issue commenting /reward 100 (replace 100 with the amount).
🕵️‍♂️ If someone starts working on this issue to earn the rewards, they can comment /try to let everyone know!
🙌 And when they open the PR, they can comment /claim #32 either in the PR description or in a PR's comment.

🪙 Also, everyone can tip any user commenting /tip 20 @gkorland (replace 20 with the amount, and @gkorland with the user to tip).

📖 If you want to learn more, check out our documentation.