fix: cors middleware 설정 추가

src/setupProxy.js

@@ -0,0 +1,10 @@
+const { createProxyMiddleware } = require('http-proxy-middleware');
+
+module.exports = function (app) {
+  app.use(
+    createProxyMiddleware('/api/v1', {
+      target: 'http://localhost:8090',
+      changeOrigin: true
+    })
+  );
+};