Deploy Doxygen docs to GitHub Pages

https://lifting-bits.github.io/sleigh

.github/workflows/docs.yml

@@ -0,0 +1,53 @@
+name: Documentation
+
+on:
+  release:
+    types: [published]
+  workflow_dispatch:  # manual trigger
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: pages
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+    - uses: actions/checkout@v6
+
+    - name: Setup Git User for Applying Patches
+      # See this thread for more details https://github.community/t/github-actions-bot-email-address/17204/5
+      run: |
+        git config --global user.email "41898282+github-actions[bot]@users.noreply.github.com"
+        git config --global user.name "github-actions[bot]"
+
+    - name: Install dependencies
+      run: sudo apt-get update && sudo apt-get install -y doxygen graphviz
+
+    - name: Configure
+      run: cmake --preset=ci-ubuntu -Dsleigh_RELEASE_TYPE=stable
+
+    - name: Build documentation
+      run: cmake --build build --target docs
+
+    - name: Upload Pages artifact
+      uses: actions/upload-pages-artifact@v3
+      with:
+        path: build/docs/html
+
+    - name: Deploy to GitHub Pages
+      id: deployment
+      uses: actions/deploy-pages@v4