Convert Azure DevOps build pipeline to GitHub Actions workflow

[Copilot]

Convert Azure DevOps Pipeline to GitHub Workflow

Plan:

• Create .github/workflows directory structure
• Convert Azure pipeline to GitHub workflow with the following features:
  • Run on ubuntu-latest
  • Add manual trigger (workflow_dispatch)
  • Trigger on push to vnext and master branches
  • No PR triggers (as per original pipeline comment)
  • Use Node.js 20.19.0
  • Install npm dependencies in browser directory
  • Apply special configuration (base-href modification)
  • Build the project
  • Copy web.config to dist folder
  • Upload build artifacts with 1-day retention
• Test the workflow syntax is valid
• Verify all steps are correctly converted
• Address code review feedback (cleanup step)
• Fix security vulnerability (add explicit permissions)
• Verify security scan passes
• Set artifact retention to 1 day
• Remove shouldCleanPostExecution parameter

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[turbobobbytraykov]

@copilot , make the artifact retention to be only 1 day.
Also, remove the shouldCleanPostExecution input parameter.

[Copilot]

@copilot , make the artifact retention to be only 1 day.
Also, remove the shouldCleanPostExecution input parameter.

Done. Artifact retention set to 1 day and shouldCleanPostExecution parameter removed in commit 5a9fadd.