Feature: Generate Home Assistant Config for ESP Device

[maitiSoutrik]

Add a new MCP tool generate_ha_config(project_path: str, device_name: str) to generate basic Home Assistant YAML configurations for an ESP device.

Functionality:

• Takes project_path (to understand device capabilities, e.g., from Kconfig or a manifest) and a device_name for HA.
• Generates YAML for common entities (e.g., sensors, switches, lights) based on project configuration or user input.
• Could support MQTT discovery or ESPHome YAML generation.