[ci] initial setup for github pages build and deploy

Author: basile-simvia

.github/workflows/deploy.yml

@@ -0,0 +1,44 @@
+name: Deploy to GitHub Pages
+
+on:
+  # Trigger the workflow every time you push to the `main` branch
+  # Using a different branch name? Replace `main` with your branch’s name
+  push:
+    branches:
+      - main
+      - 'ci-*'
+  # Allows you to run this workflow manually from the Actions tab on GitHub.
+  workflow_dispatch:
+
+# Allow this job to clone the repo and create a page deployment
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout your repository using git
+        uses: actions/checkout@v4
+      - name: Install, build, and upload your site
+        uses: withastro/action@v3
+        # with:
+          # path: . # The root location of your Astro project inside the repository. (optional)
+          # node-version: 20 # The specific version of Node that should be used to build your site. Defaults to 20. (optional)
+          # package-manager: pnpm@latest # The Node package manager that should be used to install dependencies and build your site. Automatically detected based on your lockfile. (optional)
+        # env:
+          # PUBLIC_POKEAPI: 'https://pokeapi.co/api/v2' # Use single quotation marks for the variable value. (optional)
+
+  deploy:
+    if: github.ref == 'refs/heads/main'
+    needs: build
+    runs-on: ubuntu-latest
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4