feat: browser router add custom error

demo/simple/src/browser/app.ts

@@ -1,4 +1,4 @@
-import { QueryRouterServer } from '@kevisual/router';
+import { CustomError, QueryRouterServer } from '@kevisual/router/browser';
 
 const router = new QueryRouterServer();
 
@@ -12,6 +12,18 @@ router
   })
   .addTo(router);
 
+router
+  .route({
+    path: 'hello',
+    key: 'world2',
+  })
+  .define(async (ctx) => {
+    ctx.body = 'Hello, world!';
+    // throw new CustomError('error');
+    throw new CustomError(5000, 'error');
+  })
+  .addTo(router);
+
 router
   .run({
     path: 'hello',
@@ -20,3 +32,12 @@ router
   .then((res) => {
     console.log(res);
   });
+
+router
+  .run({
+    path: 'hello',
+    key: 'world2',
+  })
+  .then((res) => {
+    console.log(res);
+  });