Update build.yml

.github/workflows/build.yml

@@ -10,6 +10,12 @@ jobs:
         uses: actions/checkout@master
   
       - name: build
+        shell: pwsh
         run: |
           cd build
-          powershell .\build.ps1
+          .\build.ps1
+          tools\nuget pack build build-for-myget.nuspec
+          $nupkgName = @(gci *.nupkg)[0].Name
+          $mygetSourcePath = "https://www.myget.org/F/handycontrol"
+          tools\nuget setApiKey ${{ secrets.MYGETTOKEN }} -Source $mygetSourcePath
+          tools\nuget push $nupkgName -Source $mygetSourcePath