ci: automatize crate publishing (#603)

.github/workflows/release-crates.yml

@@ -0,0 +1,53 @@
+name: Release crates
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - master
+
+jobs:
+  # Create a PR with the new versions and changelog, preparing the next release.
+  open-pr:
+    name: Release-plz PR
+    runs-on: ubuntu-latest
+
+    concurrency:
+      group: release-plz-${{ github.ref }}
+      cancel-in-progress: false
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 512
+
+      - name: Run release-plz
+        uses: release-plz/action@v0.5
+        with:
+          command: release-pr
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+
+  # Release unpublished packages.
+  release-plz-release:
+    name: Release-plz release
+    runs-on: ubuntu-latest
+    environment: cratesio-push
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 512
+
+      - name: Run release-plz
+        uses: release-plz/action@v0.5
+        with:
+          command: release
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CRATES_IO_DEVOLUTIONSBOT_API_KEY }}