changed project struture.

Also addded a functional JWT token service.

Also added user react frontend

frontend_admin/src/utils/functions.ts

@@ -0,0 +1,12 @@
+import Cookies from "js-cookie";
+
+export const greeting = () => {
+  return Cookies.get("name") ?? "Login";
+};
+
+export const logout = () => {
+  Cookies.remove("name");
+  Cookies.remove("token");
+  localStorage.removeItem("users");
+  window.location.reload();
+};