Add release workflow (#45)

.github/workflows/release.yml

@@ -0,0 +1,29 @@
+name: Publish Release
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    name: Publish crate
+    runs-on: ubuntu-latest
+    timeout-minutes: 60
+    env:
+      RUSTFLAGS: -D warnings
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+      - name: Package (dry-run)
+        run: cargo package
+      - name: Publish
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+          PATCH: ${{ github.run_number }}
+        shell: bash
+        run: |
+          git config --global user.email "runner@gha.local"
+          git config --global user.name "Github Action"
+          cargo publish