feat: add supertokens

platform/supertoken/users.ts

@@ -0,0 +1,10 @@
+import supertokens, { type User } from "supertokens-node";
+
+/**
+ * Get a user by provided user id.
+ *
+ * @param userId - User id to retrieve.
+ */
+export async function getUserById(userId: string): Promise<User | undefined> {
+  return supertokens.getUser(userId);
+}