Add publish-dev-release workflow

.github/workflows/publish-dev-release.yml

@@ -0,0 +1,55 @@
+name: Dev Build (GitHub Pages)
+
+on:
+  push:
+    branches: [$default-branch]
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Build Packs
+        uses: ./.github/actions/build-packs
+
+      - name: Substitute Download Link
+        uses: TomaszKandula/variable-substitution@v1.0.1
+        with:
+          files: "system.json"
+        env:
+          download: https://${{ github.repository_owner }}.github.io/${{ github.event.repository.name }}/dev/deltagreen.zip
+
+      - name: Copy system.json
+        run: mkdir dist && cp system.json dist/dev-system.json
+
+      - name: Zip
+        run: zip -r dist/deltagreen.zip . -x "packs/source/*" -x "build/*" -x ".*" -x "package.json" -x "package-lock.json"
+
+      # Deploy to GitHub Pages (see https://github.com/actions/starter-workflows/blob/main/pages/static.yml)
+      - name: Setup Pages
+        uses: actions/configure-pages@v5
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: "dist"
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4