add GitHub Actions workflow for deploying WebAssembly to GitHub Pages

.github/workflows/deploy-pages.yml

@@ -0,0 +1,57 @@
+name: Deploy WebAssembly to GitHub Pages
+
+on:
+  push:
+    branches:
+      - rust
+  workflow_dispatch: {}
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: pages
+  cancel-in-progress: true
+
+jobs:
+  build:
+    name: Build (trunk -> dist)
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install Rust (stable + wasm32)
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          targets: wasm32-unknown-unknown
+
+      - name: Cache cargo
+        uses: Swatinem/rust-cache@v2
+
+      - name: Install trunk
+        run: cargo install trunk --locked
+
+      - name: Build with trunk
+        working-directory: schafkopf-logic
+        run: |
+          trunk build --release --public-url "/${{ github.event.repository.name }}/"
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: schafkopf-logic/dist
+
+  deploy:
+    name: Deploy to GitHub Pages
+    runs-on: ubuntu-latest
+    needs: build
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    steps:
+      - name: Deploy
+        id: deployment
+        uses: actions/deploy-pages@v4