chore: Update tsup configuration

Modified: tsup.config.ts

This commit updates the tsup configuration file. The changes made aim to improve the project's build process and optimize the bundle size. No new functionality or bug fixes are introduced in this commit.

tsup.config.ts

@@ -8,4 +8,7 @@ export default defineConfig({
   clean: true,
   minify: true,
   format: ['cjs', 'esm'],
+  loader: {
+    '.json': 'file',
+  },
 });