fix: lib build 설정 추가

Author: JunilHwang

packages/lib/vite.config.ts

@@ -3,4 +3,11 @@ import react from "@vitejs/plugin-react-oxc";
 
 export default createViteConfig({
   plugins: [react()],
+  build: {
+    lib: {
+      entry: "src/index.ts",
+      name: "HanghaePlusLib",
+      fileName: (format) => `hanghae-plus-lib.${format}.js`,
+    },
+  },
 });