Add GitHub Actions workflow with tag-driven NuGet publishing

.github/workflows/build-and-publish.yml

@@ -0,0 +1,48 @@
+name: Build and Publish
+
+on:
+  push:
+    branches: [master]
+    tags: ['v*']
+  pull_request:
+    branches: [master]
+
+jobs:
+  build:
+    runs-on: windows-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '10.x'
+
+      - name: Determine version
+        id: version
+        shell: pwsh
+        run: |
+          if ($env:GITHUB_REF -like 'refs/tags/v*') {
+              $version = $env:GITHUB_REF -replace 'refs/tags/v', ''
+          } else {
+              $version = "0.0.0-ci.${{ github.run_number }}"
+          }
+          echo "PackageVersion=$version" >> $env:GITHUB_ENV
+          Write-Host "Version: $version"
+
+      - name: Restore
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore -p:PackageVersion=${{ env.PackageVersion }}
+
+      - name: Test
+        run: dotnet test tests/CodeStructure.Analyzers.Tests/CodeStructure.Analyzers.Tests.csproj --configuration Release --no-build
+
+      - name: Pack
+        run: dotnet pack CodeStructure.Analyzers/CodeStructure.Analyzers.csproj --configuration Release --no-build --output ./nupkg -p:PackageVersion=${{ env.PackageVersion }}
+
+      - name: Push to NuGet
+        if: startsWith(github.ref, 'refs/tags/v')
+        run: dotnet nuget push ./nupkg/*.nupkg --api-key ${{ secrets.CodeStructureNuGetKey }} --source https://api.nuget.org/v3/index.json --skip-duplicate