Feature: Generate ESP-IDF Boilerplate Code

[maitiSoutrik]

Add a new MCP tool generate_boilerplate(feature: str, target: str) to create common code patterns for ESP-IDF projects.

Functionality:

• Takes a feature name (e.g., 'wifi_sta', 'mqtt_publish', 'gpio_button', 'i2c_sensor_read') and optional target as input.
• Generates C code snippets or complete small functions for the requested feature, adapted for the specified target if necessary.
• Returns the generated code.