update register page ui and api

screens/auth/register/lib/hook.ts

@@ -0,0 +1,11 @@
+import { create } from "zustand";
+
+type State = {
+    referal: string;
+    setReferal: (referal: string) => void;
+}
+
+export const useRegisterForm = create<State>((set) => ({
+    referal: '',
+    setReferal: (referal) => set({ referal }),
+}))