AuthManager<TProfileModel extends TetherModel<TProfileModel>> class

Manages user authentication and profile data synchronization with Supabase and a local SQLite database.

The AuthManager handles:

• User sign-up, sign-in (password, OTP), and sign-out.
• Listening to Supabase authentication state changes.
• Fetching the user's profile from a specified Supabase table upon successful authentication.
• Storing and updating the user's profile in a local SQLite table.
• Clearing local profile data on sign-out or authentication errors.
• Providing ValueNotifiers for the current User and the user's profile (TProfileModel) to enable reactive UI updates.

It requires a SupabaseClient for interacting with Supabase, a SqliteConnection for local database operations, and details about the profile table (both in Supabase and locally), along with a fromJson factory for the profile model.

Example:

// Assuming MyProfileModel.fromJson exists and MyProfileModel extends TetherModel<MyProfileModel>
final authManager = AuthManager<MyProfileModel>(
  supabaseClient: supabaseInstance,
  localDb: localSqliteConnection,
  supabaseProfileTableName: 'profiles', // Name of your Supabase profiles table
  localProfileTableName: 'user_profile', // Name of your local SQLite profile table
  profileFromJsonFactory: MyProfileModel.fromJson,
  tableSchemas: myAppTableSchemas, // Map<String, SupabaseTableInfo>
);

// Listen to user changes
authManager.currentUserNotifier.addListener(() {
  print('Current Supabase User: \${authManager.currentUserNotifier.value}');
});

// Listen to profile changes
authManager.currentProfileNotifier.addListener(() {
  print('Current User Profile: \${authManager.currentProfileNotifier.value}');
});

// Sign in
try {
  await authManager.signInWithPassword(email: 'user@example.com', password: 'password');
} catch (e) {
  print('Sign-in error: $e');
}

// Sign out
await authManager.signOut();