Implement refresh on ctrl-r and close on ctrl-w

frontend/wailsjs/go/main/App.js

@@ -2,6 +2,10 @@
 // Cynhyrchwyd y ffeil hon yn awtomatig. PEIDIWCH Â MODIWL
 // This file is automatically generated. DO NOT EDIT
 
+export function Close() {
+  return window['go']['main']['App']['Close']();
+}
+
 export function CreateFood(arg1) {
   return window['go']['main']['App']['CreateFood'](arg1);
 }