fix for windows build

.github/workflows/build.yml

       run: |
         ./build_win.sh
       shell: bash
-    - name: Show build results
-      run: |
-        ls build/win
-        ls build/dist
-      shell: bash
+    - name: Archive build result artifacts
+      uses: actions/upload-artifact@v2
+      with:
+        name: octotray_win
+        path: |
+          ${{ github.workspace }}/build/dist/OctoTray_Win.zip

build_win.sh

 cd build/win
 python setup_win.py py2exe
 
+zip -r OctoTray_Win.zip dist/*
+
 cd ../..
 mkdir -p build/dist
-cp -r build/win/* build/dist/
+cp -r build/win/OctoTray_Win.zip build/dist/