Add custom GitHub Actions workflow for CI

[tharushikasethani]

Description

Please include a summary of the changes and relate any relevant issues.

Fixes # (issue)

Type of Change

• 🐛 Bug fix (non-breaking change which fixes an issue)
• ✨ New feature (non-breaking change which adds functionality)
• 📚 Documentation update
• 🔧 Configuration change
• ♻️ Code refactor (no functional changes)
• 🚀 Performance improvement
• 💥 Breaking change (fix or feature that would cause existing functionality to change)

How Has This Been Tested?

Please describe the tests you ran to verify your changes. Provide instructions so we can reproduce.

• Added/updated unit tests
• Added/updated integration tests
• Tested manually on local machine
• Tested in staging environment

Test Configuration:

• Node.js version: [e.g., 18.x]
• OS: [e.g., macOS, Ubuntu, Windows]

Checklist

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests passed locally with my changes
• Any dependent changes have been merged and published

Screenshots or Workflow Logs

If applicable, add screenshots or workflow logs to show the changes:

Additional Context

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[Copilot]

Pull request overview

Adds a new GitHub Actions workflow intended to run a Node.js test job for the sample-app project.

Changes:

• Introduces .github/workflows/custom.yml that runs npm install and npm test on ubuntu-latest.
• Configures the workflow to trigger on push events to the develop branch.
• Uses actions/checkout@v4 and actions/setup-node@v4 with Node.js 18.

Comments suppressed due to low confidence (1)

.github/workflows/custom.yml:19

• Node.js 18 is end-of-life and no longer receives security fixes. Consider using a currently supported LTS (e.g., 20.x/22.x) for the CI runtime to avoid running tests on an unsupported platform.

      - name: Setup Node.js
        uses: actions/setup-node@v4
        with:
          node-version: 18

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