ci: set up GitHub Actions workflow

[codevalve]

Set Up GitHub Actions Workflow

Description

Implement GitHub Actions workflow for automated testing and validation:

Tasks

• Create test workflow
  • Shell script validation
  • YAML configuration validation
  • Style checking (shellcheck)
• Add release workflow
  • Version bumping
  • Changelog generation
  • Release creation
• Implement PR validation
  • Check commit messages
  • Validate documentation updates
  • Test script changes

Benefits

• Ensures code quality
• Maintains project standards
• Automates release process

Additional Context

This will help maintain project quality as we accept community contributions.

[codevalve]

Completed as part of PR #15. GitHub Actions workflow now includes:

• Multi-version Node.js testing (16.x, 18.x)
• Shell script linting with shellcheck
• Unit and shell script testing
• Future support for coverage reporting