Updated GitHub Action to also build NPM

.github/workflows/build_release.yml

@@ -15,7 +15,11 @@ jobs:
         uses: actions/checkout@v2
         with:
           path: ${{ env.APP_NAME }}
-      - name: Run build
+      - name: Install NPM packages
+        run: cd ${{ env.APP_NAME }} && make npm-init
+      - name: Build JS
+        run: cd ${{ env.APP_NAME }} && make build-js-production
+      - name: Create release tarball
         run: cd ${{ env.APP_NAME }} && make appstore
       - name: Upload app tarball to release
         uses: svenstaro/upload-release-action@v2