my changes to copilot instructions

[thorstendb-ARM]

Changes

My changes to Copilot instructions MD file.
Ran simulations for possible use cases like:

• adding now modules
• adding test modules
• changing modules
• refactor, greater refactor, upper API changes
• search for bugs
• general code review

Ref: #905

Checklist

• 🤖 This change is covered by unit tests (if applicable).
• 🤹 Manual testing has been performed (if necessary).
• 🛡️ Security impacts have been considered (if relevant).
• 📖 Documentation updates are complete (if required).
• 🧠 Third-party dependencies and TPIP updated (if required).