support rc release tag

Author: paed01

.github/workflows/release.yaml

@@ -23,4 +23,6 @@ jobs:
       - name: Update npm
         run: npm install -g npm@latest
       - run: npm i
-      - run: npm publish
+      - run: npm publish $VERSION_TAG
+        env:
+          VERSION_TAG: ${{ endsWith(github.ref_name, '-rc') && '--tag rc' || '' }}