Zigbee power outlet example

[lboue]

Checklist

1. Please provide specific title of the PR describing the change, including the component name (eg. „Update of Documentation link on Readme.md“)
2. Please provide related links (eg. Issue which will be closed by this Pull Request)
3. Please update relevant Documentation if applicable
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Description of Change

Add Zigbee power outlet example (ESP_ZB_HA_MAINS_POWER_OUTLET_DEVICE_ID device type)

Tests scenarios

I have tested my Pull Request on Arduino-esp32 core v3.2.0 with ESP32-C Board with this scenario)

Related links

Please provide links to related issue, PRs etc.

[github-actions]

	Warnings
⚠️	The source branch "ZigbeePowerOutlet" incorrect format: contains uppercase letters. This can cause troubles on case-insensitive file systems (macOS). Please rename your branch.

👋 Hello lboue, we appreciate your contribution to this project!

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