GA: Install nuget

Author: pmiossec

.github/workflows/dotnetcore.yml

@@ -16,6 +16,9 @@ jobs:
     - name: Build & package with dotnet
       run: dotnet pack --configuration Release
 
+    - name: Setup NuGet.exe for use with actions
+      uses: NuGet/[email protected]
+
     - name: Add private GitHub registry to NuGet
       run: nuget sources add -name "github" -Source https://nuget.pkg.github.com/pmiossec/index.json -Username pmiossec -Password ${{ secrets.GITHUB_TOKEN }}