Introduce CI Github Action

[albertbori]

Description

Creates a new CI action for compiling and unit testing the VSM package and accompanying Shopping demo app on every pull request, and on the static main branch

Type of Change

• [ ] Bug Fix
• [ ] New Feature
• [ ] Breaking Change
• [ ] Refactor
• [ ] Documentation
• [x] Other (please describe)

Github CI addition

Checklist

• [x] I have read the contributing guidelines
• [x] Existing issues have been referenced (where applicable)
• [x] I have verified this change is not present in other open pull requests
• [x] Functionality is documented
• [ ] All code style checks pass
• [x] New code contribution is covered by automated tests
• [ ] All new and existing tests pass