Add coverage workflow and badge

[mvandeberg]

Summary by CodeRabbit

Release Notes

• Chores

  • Introduced automated code coverage collection and tracking pipeline that runs on every push to master and develop branches.
  • Coverage reports are now automatically generated and deployed for public viewing.

• Documentation

  • Updated coverage badge and links to reflect the new code coverage tracking system.

[coderabbitai]

Caution

Review failed

The pull request is closed.

📝 Walkthrough

Walkthrough

A new GitHub Actions workflow is introduced to automate code coverage collection using gcovr, with results deployed to a separate code-coverage branch for GitHub Pages hosting. Documentation is updated to reference the new coverage system instead of Codecov.

Changes

Cohort / File(s)	Summary
CI/CD Coverage Workflow .github/workflows/code-coverage.yml	New workflow that runs on pushes to master/develop and manual dispatch. Executes build, tests, and gcovr coverage analysis on ubuntu-24.04 with GCC 13. Sets up an orphan code-coverage branch, manages coverage artifacts, and prepares deployment to GitHub Pages via branch amendments and force-pushes.
Documentation README.md	Updated coverage badge references from Codecov to gcovr-based "Lines" coverage badges for master and develop branches, with corresponding links to coverage pages.

Estimated code review effort

🎯 3 (Moderate) | ⏱️ ~20 minutes

Poem

🐰 A workflow springs to life so bright,
With gcovr casting coverage light,
Branches bloom in CI's embrace,
Coverage metrics find their place!
Automation hops through every test. 🐇

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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