Add GitHub Actions for CI/CD with build, test, and NuGet packaging

[Copilot]

Automates build verification on PRs and publishes header files to NuGet on release branch pushes.

Workflows

• .github/workflows/pull-request.yml - Builds solution and runs tests on PRs to main

  • MSBuild Release x64 configuration
  • VSTest execution on test.dll

• .github/workflows/release.yml - Packages and publishes to NuGet on push to release

  • Requires NUGET_API_KEY secret
  • Uploads artifacts for manual inspection

NuGet Package

• SearchPlatAPI.nuspec - Package specification
  • All headers from src/api/ → build/native/include
  • Includes LICENSE file
  • Feed: https://api.nuget.org/v3/index.json

Security

Both workflows use explicit minimal permissions (contents: read) and official actions (nuget/setup-nuget@v2.0.0, microsoft/setup-msbuild@v2).

Original prompt

Can you create actions to help build the solution and run tests on pull requests into main, and then on check-in to release push all headers into a nuget package with a feed url

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✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.