Add GitHub pages build

Author: zyzzyxdonta

.github/workflows/documentation.yml

@@ -0,0 +1,31 @@
+# SPDX-FileCopyrightText: 2025 Helmholtz-Zentrum Dresden - Rossendorf (HZDR)
+# SPDX-License-Identifier: CC0-1.0
+# SPDX-FileContributor: David Pape
+
+name: documentation
+
+on: [push, pull_request, workflow_dispatch]
+
+permissions:
+  contents: write
+
+jobs:
+  docs:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+      - name: Install Package
+        run: |
+          python -m pip install .[docs]
+      - name: Build Documentation
+        run: |
+          task docs-build
+      - name: Deploy to GitHub Pages Branch
+        uses: peaceiris/actions-gh-pages@v4
+        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
+        with:
+          publish_branch: gh-pages
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: docs/_build/html/
+          force_orphan: true