Add Scaleway Deployment Configuration (#1)

# Scaleway Deployment Setup

This PR adds comprehensive deployment configuration for hosting the notebook site on Scaleway at `notebook.arnodo.fr`.

.gitea/workflows/deploy.yml

@@ -0,0 +1,46 @@
+name: Deploy to Scaleway
+
+on:
+  pull_request:
+    types: [closed]
+    branches:
+      - main
+
+jobs:
+  build-and-deploy:
+    if: github.event.pull_request.merged == true
+    runs-on: gitea-runner
+
+    container:
+      image: scaleway/cli:latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          submodules: recursive
+          fetch-depth: 0
+
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: "latest"
+          extended: true
+
+      - name: Build Hugo site
+        run: hugo --minify
+
+      - name: Configure Scaleway CLI
+        run: |
+          scw init access-key=${{ secrets.SCW_ACCESS_KEY }} \
+                   secret-key=${{ secrets.SCW_SECRET_KEY }} \
+                   default-organization-id=${{ secrets.SCW_ORGANIZATION_ID }} \
+                   default-region=fr-par
+
+      - name: Deploy to Object Storage
+        run: |
+          scw object cp public/ s3://notebook-arnodo-fr/ --recursive
+
+      - name: Purge CDN Cache (optional)
+        run: |
+          scw edge-services pipeline purge pipeline-id=${{ secrets.SCW_PIPELINE_ID }}