Add rustdoc action

.github/workflows/rustdoc.yaml

@@ -0,0 +1,34 @@
+name: rustdoc
+on:
+  push:
+   branches:
+   - main
+
+env:
+  CARGO_INCREMENTAL: 0
+  CARGO_NET_RETRY: 10
+  RUSTFLAGS: "-D warnings -W unreachable-pub"
+  RUSTUP_MAX_RETRIES: 10
+
+jobs:
+  rustdoc:
+    if: github.repository == 'kaist-cp/cs220'
+    runs-on: [self-hosted, ubuntu-22.04]
+
+    steps:
+    - name: Checkout repository
+      uses: actions/checkout@v3
+
+    - name: Install Rust toolchain
+      run: rustup update --no-self-update stable
+
+    - name: Build Documentation
+      run: cargo doc --all --no-deps
+
+    - name: Deploy Docs
+      uses: peaceiris/actions-gh-pages@364c31d33bb99327c77b3a5438a83a357a6729ad # v3.4.0
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_branch: gh-pages
+        publish_dir: ./target/doc
+        force_orphan: true