add environment

.github/workflows/publish.yml

@@ -1,12 +1,18 @@
-name: Publish package
+name: Publish Python package
 
 on:
+  workflow_dispatch:
   release:
     types: [published]
 
 jobs:
   build:
     runs-on: ubuntu-latest
+
+    environment:
+      name: pypi
+      url: https://pypi.org/p/jupyterlab-logout
+
     steps:
     - name: Checkout
       uses: actions/checkout@v4