Create deploy.yml

ci: add gh-pages deploy workflow.

Author: simonaglover95

.github/workflows/deploy.yml

@@ -0,0 +1,24 @@
+name: Deploy MkDocs to GitHub Pages
+
+on:
+  push:
+    branches: [ "main" ]
+
+permissions:
+  contents: write
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+          python-version: "3.11"
+      - name: Install deps
+        run: |
+          python -m pip install --upgrade pip
+          pip install mkdocs mkdocs-material
+      - name: Deploy
+        run: |
+          mkdocs gh-deploy --force