ci: cargo publish on release

.github/workflows/release.yml

@@ -0,0 +1,25 @@
+name: release to crates.io
+on:
+  release:
+    types: [created]
+
+env:
+  CARGO_TERM_COLOR: always
+
+jobs:
+  release:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository code
+        uses: actions/checkout@v4
+
+      - name: Install the Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+
+      - name: Rust Cache Action
+        uses: Swatinem/rust-cache@v2
+
+      - name: Publish
+        run: cargo publish --token $CRATES_IO_TOKEN
+        env:
+          CRATES_IO_TOKEN: ${{ secrets.CRATES_IO_TOKEN }}