ci: add github pages deployment

Author: Cafe137

.github/workflows/gh-pages.yaml

@@ -0,0 +1,32 @@
+name: GitHub Pages
+
+on:
+    push:
+        branches:
+            - 'master'
+
+jobs:
+    deploy:
+        runs-on: ubuntu-latest
+
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Set up Node.js
+              uses: actions/setup-node@v4
+              with:
+                  node-version: '18'
+
+            - name: Install dependencies
+              run: npm ci
+
+            - name: Build for gh-pages
+              run: |
+                  npm run build
+                  echo "bee-js.ethswarm.org" > ./build/CNAME
+
+            - name: Deploy to gh-pages
+              uses: peaceiris/actions-gh-pages@v4
+              with:
+                  github_token: ${{ secrets.GITHUB_TOKEN }}
+                  publish_dir: ./build