feat: add GitHub Actions workflow for publishing package

Author: snowfluke

.github/workflows/publish.yml

@@ -0,0 +1,28 @@
+# .github/workflows/publish.yml
+
+name: Publish
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      id-token: write
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Bun
+        uses: oven-sh/setup-bun@v1
+
+      - name: Install dependencies
+        run: bun install
+
+      - name: Publish package
+        run: bunx jsr publish