ci: add release preview action

.github/workflows/release-preview.yml

@@ -0,0 +1,21 @@
+name: Preview release
+on:
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  release:
+    name: Preview release
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Setup Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: "lts/*"
+      - name: Preview release
+        run: npx semantic-release --dry-run