👷 Added CI for deploying documentation

Signed-off-by: Ferdinand Thiessen <rpm@fthiessen.de>

.github/workflows/documentation.yml

@@ -0,0 +1,32 @@
+name: Deploy documentation
+on:
+  push:
+    branches:
+      - master
+
+permissions:
+  contents: write
+
+jobs:
+  build-and-deploy:
+    concurrency: ci-${{ github.ref }}
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+
+      - name: Set up node
+        uses: actions/setup-node@v3
+        with:
+          node-version-file: 'package.json'
+
+      - name: Install dependencies & build
+        run: |
+          npm ci
+          npm run build:doc
+
+      - name: Deploy
+        uses: JamesIves/github-pages-deploy-action@v4
+        with:
+          folder: dist/doc
+          branch: gh-pages