Setup trusted publishing to crates.io (#62)

Part of #18

Also needs rust-lang/team#2490 to work

Sets up a workflow where tagged commits will be automatically `cargo
publish`d to crates.io

Author: aDotInTheVoid

.github/workflows/release.yml

@@ -0,0 +1,17 @@
+name: Publish to crates.io
+on:
+  push:
+    tags: ['v*']  # Triggers when pushing tags starting with 'v'
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    environment: release  # Optional: for enhanced security
+    permissions:
+      id-token: write     # Required for OIDC token exchange
+    steps:
+    - uses: actions/checkout@v6
+    - uses: rust-lang/crates-io-auth-action@v1
+      id: auth
+    - run: cargo publish
+      env:
+        CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}

clgen.sh

@@ -62,4 +62,3 @@ echo "git add Cargo.toml CHANGELOG.md COMMIT.txt src/"
 echo "git commit -m $new_tag"
 echo "git tag $new_tag"
 echo "git push && git push --tags"
-echo "cargo publish"