ci: Add Release-plz to the CI. (#306)

.github/workflows/release-plz.yml

@@ -0,0 +1,36 @@
+name: Release Plz
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  release-plz:
+    name: Release-plz
+    runs-on: ubuntu-latest
+    steps:
+      # Generating a GitHub token, so that PRs and tags created by
+      # the release-plz-action can trigger actions workflows.
+      - name: Generate GitHub token
+        uses: actions/create-github-app-token@v1
+        id: generate-token
+        with:
+          app-id: ${{ secrets.WEBB_SPIDER_APP_ID }}
+          private-key: ${{ secrets.WEBB_SPIDER_PRIV_KEY }}
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+          token: ${{ steps.generate-token.outputs.token }}
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run release-plz
+        uses: MarcoIeni/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ steps.generate-token.outputs.token }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}