feat: add clerk auth support with convex (#548)

apps/cli/templates/auth/better-auth/native/native-base/lib/auth-client.ts.hbs

@@ -0,0 +1,13 @@
+import { createAuthClient } from "better-auth/react";
+import { expoClient } from "@better-auth/expo/client";
+import * as SecureStore from "expo-secure-store";
+
+export const authClient = createAuthClient({
+  baseURL: process.env.EXPO_PUBLIC_SERVER_URL,
+  plugins: [
+    expoClient({
+      storagePrefix: "my-better-t-app",
+      storage: SecureStore,
+    }),
+  ],
+});