Add GitHub Actions workflow for deploying to GitHub Pages

* **Build job**
  - Check out the repository
  - Set up Rust toolchain
  - Build the project for the `wasm32-unknown-unknown` target
  - Upload build artifacts

* **Deploy job**
  - Depend on the `build` job
  - Check out the repository
  - Download build artifacts
  - Deploy to GitHub Pages using `peaceiris/actions-gh-pages@v3`

Author: qa-chrisb

.github/workflows/deploy-gh-pages.yml

@@ -1,53 +1,49 @@
-# Simple workflow for deploying static content to GitHub Pages
-name: Deploy static content to Pages
+name: Deploy to GitHub Pages
 
 on:
-  # Runs on main when a release is published
-  release:
-    types: [published]
-    branches: ["main"]
   push:
-    branches: ["main"]
-
-# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
-permissions:
-  contents: read
-  pages: write
-  id-token: write
-
-concurrency:
-  group: "pages"
-  cancel-in-progress: false
+    branches:
+      - main
 
 jobs:
-  # Single deploy job since we're just deploying
-  deploy:
-    environment:
-      name: github-pages
-      url: ${{ steps.deployment.outputs.page_url }}
+  build:
     runs-on: ubuntu-latest
+
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v2
+
       - name: Set up Rust
         uses: actions-rs/toolchain@v1
         with:
           toolchain: stable
+          override: true
+
       - name: Build the project
         run: cargo build --release --target wasm32-unknown-unknown
-      - name: Install wasm-bindgen-cli
-        run: cargo install wasm-bindgen-cli
-      - name: Generate wasm-bindgen output
-        run: wasm-bindgen target/wasm32-unknown-unknown/release/random_shader_window.wasm --out-dir ./out --web
-      - name: Copy index.html to deploy directory
-        run: cp index.html ./out
-      - name: Setup Pages
-        uses: actions/configure-pages@v4
-      - name: Upload artifact
-        uses: actions/upload-pages-artifact@v3
+
+      - name: Upload artifacts
+        uses: actions/upload-artifact@v2
         with:
-          # Upload entire repository
-          path: ./out
+          name: wasm-build
+          path: pkg
+
+  deploy:
+    runs-on: ubuntu-latest
+    needs: build
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v2
+
+      - name: Download artifacts
+        uses: actions/download-artifact@v2
+        with:
+          name: wasm-build
+          path: pkg
+
       - name: Deploy to GitHub Pages
-        id: deployment
-        uses: actions/deploy-pages@v4
+        uses: peaceiris/actions-gh-pages@v3
+        with:
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          publish_dir: ./pkg