POS socket handler library - v1.0.0

The initial release of pos_socket_handler_library introduces a reliable and scalable solution for managing customer and KOT displays in POS Android applications. This version includes:

Device Discovery:
Automatically identifies customer and KOT displays on the same Wi-Fi network.

TCP Socket Communication:
Enables bi-directional communication for seamless real-time updates.

Connection Management:
Handles multiple device connections with stability and reliability.

Dynamic Updates:
Send order details, cart summaries, and notifications to displays in real time.

Easy Integration:
Lightweight and simple setup for existing POS systems.