add github workflow

.github/workflows/pages.yml

@@ -0,0 +1,58 @@
+# Updated from SvelteKit docs. See https://kit.svelte.dev/docs/adapter-static#github-pages for more information
+
+name: Deploy to GitHub Pages
+
+on:
+  push:
+    branches: 'main'
+
+jobs:
+  build_site:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      # If you're using pnpm, add this step then change the commands and cache key below to use `pnpm`
+      # - name: Install pnpm
+      #   uses: pnpm/action-setup@v3
+      #   with:
+      #     version: 8
+
+      - name: Install Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm install
+
+      - name: build
+        env:
+          BASE_PATH: '/${{ github.event.repository.name }}'
+        run: |
+          npm run build
+
+      - name: Upload Artifacts
+        uses: actions/upload-pages-artifact@v3
+        with:
+          # this should match the `pages` option in your adapter-static options
+          path: 'build/'
+
+  deploy:
+    needs: build_site
+    runs-on: ubuntu-latest
+
+    permissions:
+      pages: write
+      id-token: write
+
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+
+    steps:
+      - name: Deploy
+        id: deployment
+        uses: actions/deploy-pages@v4