add actions for github pages

.github/workflows/github-pages.yml

@@ -0,0 +1,42 @@
+name: GitHub Pages
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+
+jobs:
+  deploy:
+    runs-on: ubuntu-22.04
+    concurrency:
+      group: ${{ github.workflow }}-${{ github.ref }}
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          submodules: true  # Fetch Hugo themes (true OR recursive)
+          fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
+
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: "0.111.3"
+          extended: true
+
+      - uses: actions/cache@v3
+        with:
+          # path: /home/runner/.cache/hugo_cache    # <-- with hugo version v0.116.0 and above
+          path: /tmp/hugo_cache                 # <-- with hugo version < v0.116.0
+          key: ${{ runner.os }}-hugomod-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-hugomod-
+
+      - name: Build
+        run: hugo --gc --minify
+
+      - name: Deploy
+        uses: peaceiris/actions-gh-pages@v3
+        if: github.ref == 'refs/heads/main'
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./public