Add GitHub Actions CI workflow for pull requests

[Copilot]

Overview

This PR adds a comprehensive GitHub Actions CI workflow that automatically runs on pull requests to ensure code quality and prevent regressions.

What's Added

A new workflow file .github/workflows/example-shm-ci.yml that provides:

• Multi-platform testing on Ubuntu, Windows, and macOS
• Code quality checks using pylint (minimum score: 7.0)
• Automated testing with pytest and coverage reporting
• Build verification by creating wheel and sdist distributions
• Artifact uploads for distribution packages

Workflow Features

The workflow is triggered automatically on all pull request changes.

Pipeline Steps

1. Environment Setup: Python 3.12 with Poetry dependency management
2. Linting: Ensures code quality with pylint (minimum score: 7.0)
3. Testing: Runs pytest with coverage on Ubuntu, without coverage on Windows/macOS
4. Coverage Reporting: Uploads coverage data to Codecov (when configured)
5. Build: Creates wheel and source distributions to verify packaging
6. Artifacts: Uploads build artifacts for review (1-day retention)

Design Decisions

• Runs on all file changes: The workflow executes for any changes in pull requests to ensure comprehensive validation
• Optimized resource usage: Coverage and artifact uploads only on Ubuntu to reduce CI time
• Non-blocking coverage upload: Won't fail CI if Codecov token isn't configured
• Cross-platform Poetry installation: Handles PATH setup correctly on Linux, macOS, and Windows
• Appropriate linting threshold: Pylint minimum score set to 7.0 to balance code quality with practical development workflow

Based On

This workflow follows the patterns established in the simulation-bridge repository:

• simulation-bridge-ci.yml
• matlab-agent-ci.yml

Fixes #23

Original prompt

---

This section details on the original issue you should resolve

<issue_title>Github actions for pull requests</issue_title>
<issue_description>Use this and this workflow files as inspiration to create a workflow.</issue_description>

Comments on the Issue (you are @copilot in this section)

Fixes #23

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✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.

[prasadtalasila]

@copilot please make the suggested changes.