Automatically create a matching release for every NuGet version (#759)

* Automatically create a matching release for every NuGet version

.github/workflows/nuget.yaml

@@ -40,3 +40,16 @@ jobs:
 
     - name: dotnet nuget push
       run: dotnet nuget push pkg\*.nupkg -s https://www.nuget.org/ -k ${{ secrets.nuget_api_key }}
+
+    # This step can be removed when GH runner has gh version 2.4.0 (2021-12-21) or higher
+    # As of 1/8/2022, runner has 2.3.0 which doesn't support --generate-notes below
+    - name: install latest gh cli 
+      run: choco install gh
+
+    - name: create release
+      shell: pwsh
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      run: |
+        $VERSION = Get-ChildItem -Path pkg/*.nupkg -Name | Select-String -Pattern '\d+.\d+.\d+' | foreach {$_.Matches.Value}
+        gh release create --generate-notes $VERSION