Add copilot management files

[droidmonkey]

This will help copilot agents write better PR's.

Todo:

• Add discussion on AI contributions to readme and contributing

Testing strategy

Tested against my personal repo, greatly improved outcomes.

Type of change

• ✅ New feature (change that adds functionality)

[Copilot]

Pull Request Overview

Adds initial Copilot management configuration to the repository by introducing a setup workflow and documentation for Copilot agents.

• Introduce a GitHub Actions workflow to prepare the environment for Copilot agents
• Provide a Markdown guide outlining project structure, standards, and contribution flow for Copilot agents

Reviewed Changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 2 comments.

File	Description
.github/workflows/copilot-setup-steps.yml	New workflow to install system dependencies for Copilot
.github/copilot-instructions.md	New instructions and coding guidelines for Copilot agents

Comments suppressed due to low confidence (1)

.github/workflows/copilot-setup-steps.yml:29

• Add the -y flag to the apt install command to avoid interactive prompts in CI, e.g., sudo apt install -y build-essential cmake g++ ninja-build.

sudo apt install build-essential cmake g++ ninja-build

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.89%. Comparing base (3c7c3b0) to head (689991a).
Report is 2 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #12207      +/-   ##
===========================================
+ Coverage    63.87%   63.89%   +0.02%     
===========================================
  Files          369      369              
  Lines        38935    38935              
===========================================
+ Hits         24866    24875       +9     
+ Misses       14069    14060       -9     

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[varjolintu]

Should we add some kind of section (commented by default) to the pull request template that suggests to document how AI has been used?

[droidmonkey]

Added to pull request template