Fix NuGet workflow to pack individual projects

Author: rafalmaciag

.github/workflows/publish-nuget.yml

@@ -33,12 +33,20 @@ jobs:
     - name: Build
       run: dotnet build Source/ModelingEvolution.Observable.sln --configuration Release --no-restore
 
-    - name: Pack
-      run: dotnet pack Source/ModelingEvolution.Observable.sln --configuration Release --no-build --output ./nupkg
+    - name: Pack Observable
+      run: dotnet pack Source/ModelingEvolution.Observable/ModelingEvolution.Observable.csproj --configuration Release --no-build --output ./nupkg
+
+    - name: Pack Observable.Blazor
+      run: dotnet pack Source/ModelingEvolution.Observable.Blazor/ModelingEvolution.Observable.Blazor.csproj --configuration Release --no-build --output ./nupkg
+
+    - name: List packages
+      run: ls -la ./nupkg/
 
     - name: Push to NuGet
       run: |
-        dotnet nuget push ./nupkg/*.nupkg \
-          --api-key ${{ secrets.NUGET_API_KEY }} \
-          --source https://api.nuget.org/v3/index.json \
-          --skip-duplicate
+        for pkg in ./nupkg/*.nupkg; do
+          dotnet nuget push "$pkg" \
+            --api-key ${{ secrets.NUGET_API_KEY }} \
+            --source https://api.nuget.org/v3/index.json \
+            --skip-duplicate
+        done