Add EpsilonRT DIY pilot wire module quirk

[epsilonrt]

Proposed change

This PR adds a new quirk for the EpsilonRT DIY Pilot Wire heating module (Model: ERT-MPZ-03).

The quirk implements a manufacturer-specific cluster (0xFC00) to manage the 6 standard pilot wire modes. It follows the existing implementation patterns for French pilot wire modules (like Nodon) by using PascalCase for the Enum states to ensure immediate compatibility with current ZHA and Home Assistant versions.

Additional information

• DIY Project: This is a non-commercial DIY module using Manufacturer ID 0x1234.
• Firmware & Hardware: Technical details and firmware source can be found at: https://github.com/epsilonrt/ZigbeePilotWireControl
• Standardization: I am using the official pilot_wire_mode translation key for seamless integration.
• Consistency: While I'm aware of the discussion regarding "slugs" in future versions, this PR maintains consistency with other pilot wire quirks already merged in the repository.

Device diagnostics

zha-01K8ZVXHG121GK60Z1SXFF0QAY-EpsilonRT ERT-MPZ-03-1b98d0483970a0c72e98f9e9a6ef208b.json

Checklist

• The changes are tested and work correctly
• pre-commit checks pass / the code has been formatted using Black
• Tests have been added to verify that the new code works
• Device diagnostics data has been attached

[Copilot]

Pull request overview

Adds a new v2 quirk for the EpsilonRT DIY pilot wire heating module (ERT-MPZ-03), closely following the existing NodOn pilot wire quirk pattern with identical enum values and cluster structure.

Changes:

• New manufacturer-specific cluster (0xFC00) and enum for 6 pilot wire modes
• V2 QuirkBuilder registration exposing the pilot wire mode as a select entity
• Basic tests for cluster and enum definitions

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
zhaquirks/epsilonrt/init.py	New package init for EpsilonRT manufacturer
zhaquirks/epsilonrt/pilot_wire.py	Custom cluster, enum, and v2 quirk for pilot wire module
tests/test_epsilonrt.py	Tests for cluster and enum definitions

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 92.75%. Comparing base (68ac36a) to head (fc225a3).

Additional details and impacted files

@@            Coverage Diff             @@
##              dev    #4827      +/-   ##
==========================================
+ Coverage   92.74%   92.75%   +0.01%     
==========================================
  Files         382      383       +1     
  Lines       12783    12806      +23     
==========================================
+ Hits        11855    11878      +23     
  Misses        928      928              

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[Copilot]

Pull request overview

Adds a new v2 quirk for the EpsilonRT DIY Pilot Wire heating module (ERT-MPZ-03), closely following the existing Nodon pilot wire quirk pattern.

Changes:

• New manufacturer-specific cluster (0xFC00) and enum for 6 pilot wire modes
• Declarative v2 quirk registration with QuirkBuilder
• Basic tests for cluster attributes and enum values

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
zhaquirks/epsilonrt/__init__.py	New package init for EpsilonRT manufacturer
zhaquirks/epsilonrt/pilot_wire.py	Pilot wire cluster, enum, and quirk registration mirroring Nodon's implementation
tests/test_epsilonrt.py	Tests for cluster attribute definitions and enum values

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