feat: add auth

lib/auth-client.ts

@@ -0,0 +1,16 @@
+import { createAuthClient } from "better-auth/react";
+import { genericOAuthClient } from "better-auth/client/plugins";
+import { expoClient } from "@better-auth/expo/client";
+import * as SecureStore from "expo-secure-store";
+
+export const authClient = createAuthClient({
+  baseURL: "http://localhost:8081",
+  plugins: [
+    expoClient({
+      scheme: "money",
+      storagePrefix: "money",
+      storage: SecureStore,
+    }),
+    genericOAuthClient(),
+  ]
+});