chore: add release-rc script

Author: pi0

package.json

@@ -27,6 +27,7 @@
     "play": "listhen ./playground/app.ts",
     "profile": "0x -o -D .profile -P 'autocannon -c 100 -p 10 -d 40 http://localhost:$PORT' ./playground/server.cjs",
     "release": "pnpm test && pnpm build && changelogen --release && pnpm publish && git push --follow-tags",
+    "release-rc": "pnpm test && pnpm build && changelogen --release --preminor rc --push --publish --publishTag rc",
     "test": "pnpm lint && vitest --run typecheck && vitest --run --coverage",
     "test:types": "vitest typecheck"
   },
@@ -63,4 +64,4 @@
     "zod": "^3.21.4"
   },
   "packageManager": "pnpm@8.6.9"
-}
+}