chore: 更新版本号至 0.0.90，并在 toJSONSchemaRoute 函数中添加对返回值的处理

package.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://json.schemastore.org/package",
   "name": "@kevisual/router",
-  "version": "0.0.89",
+  "version": "0.0.90",
   "description": "",
   "type": "module",
   "main": "./dist/router.js",

src/route.ts

@@ -271,6 +271,9 @@ const toJSONSchemaRoute = (route: RouteInfo) => {
   if (pickValues?.metadata?.args) {
     pickValues.metadata.args = toJSONSchema(pickValues?.metadata?.args, { mergeObject: false });
   }
+  if (pickValues?.metadata?.returns) {
+    pickValues.metadata.returns = toJSONSchema(pickValues?.metadata?.returns, { mergeObject: false });
+  }
   return pickValues;
 }