workflows: Add publish crates action

.github/workflows/CI.yml

@@ -57,3 +57,33 @@ jobs:
 
 
       - run: cargo check -p rhttp2
+
+  crates:
+    name: Publish crates
+    runs-on: ubuntu-latest
+    environment: Linux
+    needs: [style]
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Get tag
+        if: startsWith(github.ref, 'refs/tags/')
+        id: tag
+        uses: dawidd6/action-get-tag@v1
+        with:
+          strip_v: true
+
+      - name: Tag Check
+        run: |
+          echo "tag=${{ steps.tag.outputs.tag }}" >> $GITHUB_ENV
+          echo "tag=${{ steps.tag.outputs.tag }}" >> $GITHUB_OUTPUT
+          if [ -z "${{ steps.tag.outputs.tag }}" ]; then
+            echo "tag=latest" >> $GITHUB_OUTPUT
+            echo "tag=latest" >> $GITHUB_ENV
+          fi
+
+      - uses: katyo/publish-crates@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          registry-token: ${{ secrets.CARGO_REGISTRY_TOKEN }}
+          ignore-unpublished-changes: true