ci: use github actions

.github/workflows/docs.yml

@@ -0,0 +1,45 @@
+name: Deploy Docs to GitHub Pages
+
+on:
+  push:
+    branches:
+    - master
+
+jobs:
+  doc:
+    name: Documentation on Github Pages
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v3
+
+      - name: Cargo cache
+        uses: actions/cache@v1
+        with:
+          path: ~/.cargo
+          key: cargo-stable
+
+      - name: Rust toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          override: true
+
+      - name: Install system dependencies
+        run: sudo apt-get install libxkbcommon-dev libwayland-dev
+
+      - name: Build Documentation
+        uses: actions-rs/cargo@v1
+        with:
+          command: doc
+          args: --no-deps
+
+      - name: Setup index
+        run: cp ./doc_index.html ./target/doc/index.html
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./target/doc