Add GitHub Action for deploying docs to GitHub Pages

Author: swt2c

.github/workflows/deploy-docs.yml

@@ -0,0 +1,46 @@
+name: deploy-docs
+
+on:
+  workflow_dispatch:
+    inputs:
+      release_tag:
+        description: 'Release tag to deploy (e.g. wxPython-4.2.5)'
+        required: true
+        type: string
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Download docs asset from Phoenix release
+        run: |
+          ASSET_URL=$(curl -s "https://api.github.com/repos/wxWidgets/Phoenix/releases/tags/${{ inputs.release_tag }}" \
+            | jq -r '.assets[] | select(.name | startswith("wxPython-docs-")) | .browser_download_url')
+          curl -L -o wxPython-docs.tar.gz "$ASSET_URL"
+
+      - name: Extract docs
+        run: |
+          mkdir html
+          tar -xzf wxPython-docs.tar.gz --strip-components=3 -C html
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: html
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4