Add base project

Implement auth method

src/index.tsx

@@ -0,0 +1,30 @@
+import { NativeModules, Platform } from 'react-native';
+import { ok, err, type Result } from '@synonymdev/result';
+
+const LINKING_ERROR =
+  `The package 'react-native-pubky' doesn't seem to be linked. Make sure: \n\n` +
+  Platform.select({ ios: "- You have run 'pod install'\n", default: '' }) +
+  '- You rebuilt the app after installing the package\n' +
+  '- You are not using Expo Go\n';
+
+const Pubky = NativeModules.Pubky
+  ? NativeModules.Pubky
+  : new Proxy(
+      {},
+      {
+        get() {
+          throw new Error(LINKING_ERROR);
+        },
+      }
+    );
+
+export async function auth(
+  url: string,
+  secretKey: string
+): Promise<Result<string[]>> {
+  const res = await Pubky.auth(url, secretKey);
+  if (res[0] === 'error') {
+    return err(res[1]);
+  }
+  return ok(res[1]);
+}