Abstraction layer unifying access to the OpenThread instance across different platforms.

This module provides a uniform macro to retrieve the otInstance pointer, shielding the core application from platform-specific API differences. Supported Platforms:

ESP_PLATFORM (ESP32): Maps to esp_openthread_get_instance().
STM_PLATFORM (STM32): Maps to APP_THREAD_GetInstance(). Usage: The core application calls otapp_port_openthread_get_instance() without needing to know which hardware is currently running.

Version: 0.1

Date: 24-10-2025

Author: Jan Łukaszewicz (plhar.nosp@m.eo@g.nosp@m.mail..nosp@m.com)