chore: Add GitHub action for publishing beta releases

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

@@ -0,0 +1,31 @@
+name: Manual NPM Publish (Beta Release)
+
+on:
+  workflow_dispatch:
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    environment: publish
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Use Node.js
+        uses: actions/setup-node@v3
+        with:
+          node-version: "20.x"
+          registry-url: "https://registry.npmjs.org"
+          always-auth: true
+
+      - name: Setup npm authentication
+        run: echo "//registry.npmjs.org/:_authToken=${{ secrets.NPM_TOKEN }}" > ~/.npmrc
+
+      - name: Install dependencies
+        run: npm ci
+
+      - name: Publish
+        run: npm publish --tag beta
+        env:
+          NODE_AUTH_TOKEN: ${{ secrets.NPM_TOKEN }}