chore: add publish-nuget job

Author: bonk-dev

.github/workflows/dotnet.yml

@@ -53,3 +53,23 @@ jobs:
       with:
         name: HarpoS7.PoC_Windows_x64_SelfContained
         path: ./windows/*
+
+  publish-nuget:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'push' && github.ref == 'refs/heads/main'
+    environment: nuget-release
+    needs: [build]
+    permissions:
+      id-token: write  # enable GitHub OIDC token issuance for this job
+    steps:
+      - uses: actions/download-artifact@v7
+        with:
+          name: HarpoS7-NuGet-Packages
+          path: ./artifacts
+      - name: NuGet login
+        uses: NuGet/login@v1
+        id: login
+        with:
+          user: ${{ secrets.NUGET_USER }}
+      - name: Publish to NuGet
+        run: dotnet nuget push ./artifacts/*.nupkg --api-key ${{ steps.login.outputs.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate