Development 3.0: Add GitHub Actions CI/CD Workflow to MeteoForge

[raoul-linnenbank]

Title: Add GitHub Actions CI/CD Workflow to the MeteoForge Project

Description:
We should add a GitHub Actions workflow to automate testing, linting, and possibly deployment for this project. This will help ensure code quality, catch issues early, and maintain consistent development practices.

Proposed Tasks:

1. Determine the proper workflow triggers for each situation

   • What to run on push to main branches (e.g., main, develop).
   • What to run on pull_request for all branches.
   • What to run manually
   • Which workflow elements to keep separate for reusability, and what to include for endgoals only.

2. Define job steps

   • Check out repository.
   • Set up an appropriate runtime environment (Proper Python version(s) or evaluation-image).
   • Install dependencies if needed.
   • Run tests and/or linting (and store the results) if needed.
   • Optionally build and deploy if on the proper branches.

3. Add status badges

   • Display workflow status badge in README.md.

4. Document CI/CD in contributing guide

   • Mention that all PRs must pass GitHub Actions checks before merging.

Acceptance Criteria:

• Workflow files exists in .github/workflows/ for all intended situations in the MeteoForge repo
• Workflow files exists in .github/workflows/ for all intended situations in the MeteoForge-Sources repo
• Workflow files exists in .github/workflows/ for all intended situations in the MeteoForge-API repo
• Workflow runs successfully on push and PR events
• All tests pass in the workflow environment
• README contains status badge
• Contributing guide refers to requirements for CI/CD workflows

Additional Notes:

• Consider caching dependencies where possible to speed up runs.
• If sensitive secrets are needed (e.g., for deployment), store them in GitHub repository secrets.