Feature: Explain ESP-IDF Build Error

[maitiSoutrik]

Add a new MCP tool explain_error(error_log: str) to parse ESP-IDF build errors and provide potential solutions or explanations.

Functionality:

• Takes a snippet of the build error log as input.
• Could use regex to identify common error patterns or search a knowledge base (or even use an LLM via another MCP tool) for known issues and solutions.
• Returns a structured explanation of the error and suggested troubleshooting steps.