Add NuGet configuration.

Author: dkocher

.github/workflows/snapshot.yml

@@ -30,6 +30,13 @@ jobs:
         uses: microsoft/setup-msbuild@v2
         with:
           msbuild-architecture: x64
+      - name: "NuGet"
+        if: runner.os == 'windows'
+        env:
+          NugetCredentials: "Username=${{ github.actor }};Password=${{ secrets.GITHUB_TOKEN }}"
+        run: |
+          echo "NuGetPackageSourceCredentials_gh-ikvmnet=${{ env.NugetCredentials }}" >> $env:GITHUB_ENV
+          echo "NuGetPackageSourceCredentials_gh-iterate-ch=${{ env.NugetCredentials }}" >> $env:GITHUB_ENV
       - name: Install Bonjour SDK
         if: ${{ runner.os == 'Windows' }}
         uses: crazy-max/ghaction-chocolatey@v3