Add SvelteKit workflow and properties for GitHub Pages deployment

pages/properties/sveltekit.properties.json

@@ -0,0 +1,6 @@
+{
+  "name": "SvelteKit",
+  "description": "Build and deploy a static SvelteKit site to GitHub Pages.",
+  "iconName": "svelte",
+  "categories": ["Pages", "Svelte"]
+}

pages/sveltekit.yml

@@ -0,0 +1,87 @@
+# Sample workflow for building and deploying a SvelteKit site to GitHub Pages
+#
+# To get started with SvelteKit see: https://svelte.dev/tutorial/
+#
+name: Deploy SvelteKit Site to Pages
+
+on:
+  # Runs on pushes targeting the default branch
+  push:
+    branches: [$default-branch]
+
+  # Allows you to run this workflow manually from the Actions tab
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Detect package manager
+        id: detect-package-manager
+        run: |
+          if [ -f "${{ github.workspace }}/yarn.lock" ]; then
+            echo "manager=yarn" >> $GITHUB_OUTPUT
+            echo "command=install" >> $GITHUB_OUTPUT
+            echo "runner=yarn" >> $GITHUB_OUTPUT
+            exit 0
+          elif [ -f "${{ github.workspace }}/package.json" ]; then
+            echo "manager=npm" >> $GITHUB_OUTPUT
+            echo "command=ci" >> $GITHUB_OUTPUT
+            echo "runner=npx --no-install" >> $GITHUB_OUTPUT
+            exit 0
+          else
+            echo "Unable to determine package manager"
+            exit 1
+          fi
+
+      - name: Validate SvelteKit Adapter
+        run: |
+          if ! grep -q "@sveltejs/adapter-static" package.json; then
+            echo "::error title=Wrong Adapter Detected::GitHub Pages requires '@sveltejs/adapter-static'."
+            exit 1
+          fi
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: "20"
+          cache: ${{ steps.detect-package-manager.outputs.manager }}
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v5
+
+      - name: Install Dependencies
+        run: ${{ steps.detect-package-manager.outputs.manager }} ${{ steps.detect-package-manager.outputs.command }}
+
+      - name: Build with SvelteKit
+        run: ${{ steps.detect-package-manager.outputs.runner }} npm run build
+
+      - name: Upload Artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: build/
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4