[AFP-111] Configure proxy to backend (@asegers)

package.json

@@ -2,6 +2,7 @@
   "name": "order-management-client",
   "version": "0.1.0",
   "private": true,
+  "proxy": "http://localhost:8080",
   "dependencies": {
     "@chakra-ui/react": "^1.6.0",
     "@emotion/react": "^11",