Add GitHub Actions workflow for mkdocs deployment

Author: GameOverture

.github/workflows/deploy.yml

@@ -0,0 +1,28 @@
+name: Deploy mkdocs (material) site
+
+on:
+  push:
+    branches:
+      - main
+  workflow_dispatch:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repo
+        uses: actions/checkout@v4
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.x"
+
+      - name: Install MkDocs + Material
+        run: |
+          pip install mkdocs-material
+
+      - name: Build and deploy
+        run: |
+          cd mkdocs
+          mkdocs gh-deploy --force