build: fix build and add examples

examples/react-tanstack-router/README.md

@@ -0,0 +1,29 @@
+# Rsbuild project
+
+## Setup
+
+Install the dependencies:
+
+```bash
+pnpm install
+```
+
+## Get started
+
+Start the dev server:
+
+```bash
+pnpm dev
+```
+
+Build the app for production:
+
+```bash
+pnpm build
+```
+
+Preview the production build locally:
+
+```bash
+pnpm preview
+```