feat(user): rename to identity

feat(identity): add getIota function with caching

packages/call/src/components/top.tsx

@@ -1,4 +1,4 @@
-import { useUserFields } from "@tensamin/user/context";
+import { useUserFields } from "@tensamin/identity/context";
 import { useCall, getRoom } from "../store";
 import { useEffect, useState } from "react";
 import { useStorage } from "@tensamin/storage/context";