Upload release build artifact

Author: Matthiee

.github/workflows/dotnet.yml

@@ -32,3 +32,8 @@ jobs:
       with:
         name: Nuget
         path: /home/runner/work/FinancialModelingPrep.NET/FinancialModelingPrep.NET/FinancialModelingPrepApi/bin/Release/*.nupkg
+    - name: Upload Release Build Artifacts
+      uses: actions/upload-artifact@v2.2.3
+      with:
+        name: Release Build
+        path: /home/runner/work/FinancialModelingPrep.NET/FinancialModelingPrep.NET/FinancialModelingPrepApi/bin/Release/**/*