Add release-plz and clean up workflows (#1510)

It's no secret that we're lacking behind on releases;
partially, because they are slightly tedious to create.

My hope is that this will be resolved by introducing `release-plz` [1],
which is automates publication whenever we push to `master`.

Along the way, I aligned the naming of the other workflows.

[1]: https://github.com/MarcoIeni/release-plz

.github/workflows/release.yml → .github/workflows/release-binary.yml

@@ -5,7 +5,7 @@
 #   - Dockerfile-CI.alpine.Dockerfile
 #   - https://github.com/lycheeverse/lychee-action/blob/master/action.yml
 
-name: Release
+name: Release Binary
 on:
   release:
     types:
@@ -16,7 +16,6 @@ env:
 
 jobs:
   prepare:
-    name: Build release binary
     runs-on: ubuntu-latest
     outputs:
       tag_name: ${{ steps.get_release.outputs.tag_name }}

.github/workflows/release-plz.yml

@@ -0,0 +1,31 @@
+# Release-plz pipeline for publishing
+# a new GitHub + crates.io release
+
+name: Release-plz
+
+permissions:
+  pull-requests: write
+  contents: write
+
+on:
+  push:
+    branches:
+      - main
+      - master
+
+jobs:
+  release-plz:
+    name: Release-plz
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Run release-plz
+        uses: MarcoIeni/[email protected]
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}