Initial manual workflow for pdf gen

.github/workflows/pdf.yml

@@ -0,0 +1,15 @@
+name: Generate PDF
+
+on:
+  workflow_dispatch:
+
+jobs:
+  pdf:
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4.1.7
+    - name: Setup Node.js environment
+      uses: actions/setup-node@v4.0.3
+    - name: Regeneate page list
+      run: yarn run en-pdf-list