move vsce to workflow

Author: Artmann

.github/workflows/package.yml

@@ -40,6 +40,9 @@ jobs:
         env:
           NODE_AUTH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
 
+      - name: Install vsce
+        run: npm install -g @vscode/vsce
+
       - name: Extract version from package.json
         id: package-version
         run: |