ci: add website deploy workflow

Co-authored-by: Zachary Klosko <zklosko@users.noreply.github.com>

.github/workflows/website.yml

@@ -0,0 +1,42 @@
+name: Website
+
+on:
+  push:
+    branches: [main]
+    paths:
+      - .github/workflows/website.yml
+      - website/**
+      - docs/**
+  pull_request:
+
+jobs:
+  deploy:
+    name: Deploy
+    runs-on: ubuntu-latest
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+
+    steps:
+      - uses: actions/checkout@v2
+
+      - name: Setup Node
+        uses: actions/setup-node@v2
+        with:
+          node-version: "16"
+          cache: yarn
+          cache-dependency-path: ./website/yarn.lock
+
+      - name: Install
+        working-directory: website
+        run: yarn install --frozen-lockfile
+
+      - name: Build
+        working-directory: website
+        run: yarn build
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: ${{ github.ref == 'refs/heads/main' }}
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./website/build