Implement Firebase Authentication for the RESP gift platform with email/password authentication. This enables parent users to create accounts and manage their children's gift pages securely.

️ [active] 🌰[bloc_pattern] [rxdart] [stream] 🍄 simple auth app flutter, server node.js, bloc pattern, rxdart 🍁🍁 functionalities: login, register, change password, change avatar, forgot password.