Prepare to publish with workflow

.github/workflows/publish.yml

@@ -0,0 +1,32 @@
+name: Publish to crates.io
+
+on:
+  push:
+    tags:
+      - "v*"
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    permissions:
+      id-token: write # Required for OIDC token exchange
+
+    steps:
+      - uses: actions/checkout@v5
+
+      - uses: rust-lang/crates-io-auth-action@v1
+        id: auth
+
+      - name: Set Cargo.toml version
+        shell: bash
+        env:
+          RELEASE_TAG: ${{ github.ref }}
+        run: |
+          mv Cargo.toml Cargo.toml.orig
+          sed "s/0\\.0\\.0-git/${RELEASE_TAG##*\/v}/" Cargo.toml.orig > Cargo.toml
+          rm -f Cargo.toml.orig
+
+      - run: cargo publish --package ic-http-gateway --allow-dirty
+        env:
+          CARGO_REGISTRY_TOKEN: ${{ steps.auth.outputs.token }}