added greeting with context logic

FrontendV2/src/states/Context.ts

@@ -0,0 +1,19 @@
+import { createContext } from "react";
+import { useContext } from "react";
+
+export interface User {
+  username: string;
+  role: number;
+}
+
+export const UserContext = createContext<User | undefined>(undefined);
+
+export function useUserContext() {
+  const user = useContext(UserContext);
+
+  if (user === undefined) {
+    throw new Error("useUserContext must be used with a UserContext")
+  }
+
+  return user;
+}