ci: add release-plz.yml (#24)

Tokens required: https://release-plz.dev/docs/github/quickstart

Author: Boshen

.github/workflows/release-plz.yml

@@ -0,0 +1,33 @@
+name: Release Plz
+
+permissions: {}
+
+on:
+  workflow_dispatch:
+  push:
+    branches:
+      - main
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+jobs:
+  release-plz:
+    name: Release-plz
+    runs-on: ubuntu-latest
+    permissions:
+      pull-requests: write
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          persist-credentials: true # required by release-plz
+
+      - name: Run release-plz
+        id: release-plz
+        uses: MarcoIeni/release-plz-action@8724d33cd97b8295051102e2e19ca592962238f5 # v0.5.108
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}